why blood flow in a leg vein is slow when there is lack of movement?
Answers
Answer:
Lack of movement allows blood to circulate in a vein very slowly by sitting still for long periods of time. Slow-flowing blood is more likely to clot than normal-flowing blood. This issue is referred to as deep vein thrombosis (DVT). In DVT, as seen in the diagram, the clot normally takes place in a leg vein.
Explanation:
Lack of movement by still for long periods of time makes blood flow very slowly in a vein it is because the blood that flows slowly is more likely to clot than blood that flows normally.
What are the veins called in the leg?Large leg veins are saphenous veins. The leg veins that become weak in the most people age are the superficial veins and perforator veins.
The superficial and undesirable visible branches are known as varicose, reticular, and spider veins.
When sitting still, the flow of blood flow becomes slow, it is caused because the blood that flows slowly is more likely to clot than blood that flows normally.
This condition is called deep vein thrombosis.
Thus, due to this condition, blood flow in a leg vein is slow when there is lack of movement.
For more details regarding deep vein thrombosis, visit:
https://brainly.com/question/7023021
#SPJ2
Related Questions
How is the DNA unwound at the replication fork? What effect does this have on the DNA upstream of the fork, and how does the cell deal with this effect?
Answers
At the replication fork, the DNA is unwound by an enzyme called helicase, which breaks the hydrogen bonds between the complementary base pairs. This creates a replication bubble where the two strands of DNA are separated and each strand can act as a template for the synthesis of a new strand.
The unwinding of the DNA at the replication fork causes tension and twisting upstream of the fork, which can lead to supercoiling of the DNA. Supercoiling can cause problems for the replication machinery as it progresses along the DNA strand.
To deal with this effect, the cell has enzymes called topoisomerases that can relax the supercoiled DNA by breaking and rejoining the strands. Topoisomerases are able to relieve the tension and maintain the stability of the DNA during replication.
In summary, the DNA is unwound at the replication fork by helicase, which creates a replication bubble. This can cause tension and twisting upstream of the fork, leading to supercoiling. The cell uses topoisomerases to relax the supercoiled DNA and maintain stability during replication.
Pls help Will Give Brainliest
What role does the refuge cotton play in a pink bollworm population acquiring Bt resistance?
A. Refuge cotton allows for large numbers of non-resistant bollworms to survive
B. Refuge cotton allows for large numbers of Bt resistant bollworms to survive
C. Refuge cotton allows for small numbers of non-resistant bollworms to survive
D. Refuge cotton allows for small numbers of both Bt resistant and nonresistant bollworms to
survive.
Answers
please help me please will give brainliest to
Answers
you half to describe what the people are doing in the picture
Answers
Two scientists do not agree on which type of grocery bag is better for the environment. The Outcome of their disagreement is most likely to be:
Answer my question , ty .
Answers
Answer:
answer is D
Explanation:
Match each structure in the left column with its correct description from the right column.
1. lacuna a. bone shaft
2. trabecula b. found in juvenile bones
3. articular cartilage c. bony column
4. diaphysis d. contains yellow marrow
5. epiphyseal cartilage e. bone tip
6. osteon f. lines marrow cavity
7. periosteum g. found in adult bones
8. interstitial lamellae h. forms osteon
9. epiphysis i. bony projection
10. endosteum j. produces bone matrix
11. marrow cavity k. cellular space in the bone matrix
12. epiphyseal line l. remodeled osteons
13. concentric lamellae m. the outer membrane of bone
14. osteoblast n. cartilage on epiphysis
Bone Anatomy:
Bones are organs, made up of several types of tissue. Bone tissue itself forms the majority of bones, but they also contain blood vessels, nerves, and connective tissue membranes. The outer surface of bone is smooth and solid, giving bone its strength and resiliency, and the inside of bone is a honeycomb-like structure made up of thin flat pieces of bone that store bone marrow between them.
Answers
According to the given information the correct answer is 1. lacuna - k. cellular space in the bone matrix
2. trabecula - l. remodeled osteons
3. articular cartilage - n. cartilage on epiphysis
4. diaphysis - a. bone shaft
5. epiphyseal cartilage - h. forms osteon
6. osteon - h. forms osteon
7. periosteum - m. the outer membrane of bone
8. interstitial lamellae - k. cellular space in the bone matrix
9. epiphysis - e. bone tip
10. endosteum - j. produces bone matrix
11. marrow cavity - d. contains yellow marrow
12. epiphyseal line - g. found in adult bones
13. concentric lamellae - h. forms osteon
14. osteoblast - j. produces bone matrix
Bone is a complex tissue that provides support, protection, and movement to the body. It is composed of several layers and structures, including:
Periosteum: This is the outer layer of bone that provides a protective covering. It contains blood vessels, nerves, and cells that are involved in the growth and repair of bone tissue.
Compact bone: This is the dense, hard layer of bone that forms the outer layer of most bones. It provides strength and support to the bone.
Spongy bone: This is the less dense, more porous layer of bone that is found on the inside of bones. It contains red bone marrow, which produces blood cells, and provides support while being lighter in weight.
Bone marrow: This is the soft tissue that fills the spaces within bones. It is composed of red and yellow marrow, which produce blood cells and store fat, respectively.
Cartilage: This is a smooth, elastic tissue that covers the ends of bones at joints, providing cushioning and reducing friction.
The basic structural unit of bone is the osteon, which consists of concentric layers of bone tissue surrounding a central canal. Blood vessels and nerves run through the central canal, providing nutrients and oxygen to the bone cells. Osteocytes, which are mature bone cells, are located within the concentric layers of bone tissue and are connected to each other through tiny channels called canaliculi. This network of canaliculi allows osteocytes to communicate with each other and exchange nutrients and waste products.
Overall, the structure of bone is highly organized and complex, with various layers and structures working together to provide support, protection, and movement to the body.
To know more about bone anatomy visit:
https://brainly.com/question/30060048
#SPJ11
Dynein feet Group of answer choices are found on microtubules in cilia and flagella and cause movement by grabbing and pulling at adjacent microtubule doublets. are knobs of carbohydrate that are essential to the movement of cilia and flagella. are present in cilia but not in flagella. are the anchoring proteins in basal bodies.
Answers
Answer:
The correct answer is - are found on microtubules in cilia and flagella and cause movement by grabbing and pulling at adjacent microtubule doublets.
Explanation:
Dynein feet or arm is made up of dyneins a family of cytoskeletal motor proteins that present on microtubules in flagella or cilia or both and drives the beating motion of cilia and flagella.
These form the rows of arms or feet inside and outside, associated with the doublet microtubules of motile cilia that produce microtubule sliding to move along. It gets its energy through ATP hydrolysis.
All planets in the solar system have surfaces that are made up of either one of two materials. What are the two materials?
Answers
Answer:
are made of rock, containing common minerals like feldspars and metals like magnesium and aluminum.
Explanation:
Carbohydrates
act as "ID
cards" for cells.
Where are they
located?
Answers
Plasma membranes include carbohydrates as their third main component.
What are carbohydrates?They are often found attached to either lipids or proteins on the exterior of cells, where they form glycoproteins (forming glycolipids).
A cell wall containing a variety of polysaccharides and proteins surrounds the cells of both plants and fungi. In recent years, it has become clear that the cell wall's polysaccharides act as a signaling mechanism in plants in addition to maintaining the form and integrity of the cell.
In addition to being a component of cell membranes, covalently linked carbohydrates to proteins or lipids (glycoproteins or glycolipids) serve as sites for cell adhesion and addressing.
Therefore, according to the fluid mosaic model, proteins and carbohydrates float on top of a fluid lipid bilayer that makes up a membrane.
Learn more about cells, here:
https://brainly.com/question/11165837
#SPJ2
What is the arrow pointing to?
hydrogen ion
water
hydroxide ion
proton
hydronium ion
Answers
The arrow points to the hydroxide ion.
What is an ion?
An ion is a specie that is formed by the loss or gain of electrons. Thus any specie that carries a charge whether positive or negative could be called an ion. In this case, we have a system that has three ions in it. The hydrogen ions, the hydroxide ions and the hydronium ions.
As we can see, the red color stands for oxygen, the grey color stands for hydrogen. Looking at the image, we can see that the direction in which the arrow point is a specie that has only red and ash colors thus this corresponds to the hydroxide ion.
Learn more about hydroxide ion:https://brainly.com/question/25883474
#SPJ1
what are the functions of proteins,fats and carbohydrates in the human body.
Answers
fats: helps give your body energy
carbohydrates: carbohydrates function also helps to provide energy to your body
The body in an erect posture, facing forward, arms at the side, palms facing forward, legs apart, feet pointing forward describes what term?
Answers
Anatomical position, or standard anatomical position, refers to the positioning of the body when it is standing upright and facing forward with each arm hanging on either side of the body, and the palms facing forward. The legs are parallel, with feet flat on the floor and facing forward.
The benefit of the palms facing forward is that it makes the radius, and ulna, the bones of the forearm run parallel to each other from the elbow to the wrist.
The term is used in medicine and related fields when referring to the position of body parts in relation to each other. There are four main anatomical positions which are:- supine, prone, right lateral recumbent, and left lateral recumbent. Each position is used in different medical circumstances.
The prone is defined as "lying flat with the face downward" and supine as "lying on the back."
To learn more about anatomical position here
https://brainly.com/question/4950564
#SPJ4
Natural selection is operating as an evolutionary mechanism on this chipmunk population. The
chipmunks that are most likely to survive and reproduce can be found in which cross section on the
graph?
Answers
Due to natural selection, Chipmunks are most likely to survive in cross-section iii.
Natural selection is a fundamental mechanism of evolution that drives the adaptation and diversity of living organisms. It is a process by which certain heritable traits become more or less common in a population over successive generations based on their impact on reproductive success.
The concept was first proposed by Charles Darwin and is central to his theory of evolution by natural selection. The process of natural selection involves three key components: variation, heritability, and differential reproductive success.
Learn more about natural selection, here:
https://brainly.com/question/20152465
#SPJ1
Your question is incomplete, most probably the full question is this:
Natural selection is operating as an evolutionary mechanism in this chipmunk population. The Chipmunks that are most likely to survive and reproduce can be found in which cross-section on the graph?
The image is attached below.
Question 7/7
A young ecosystem has few insects and is full of small grasses and herbs. What could we expect to happen next?
A. Next this ecosystem would begin to grow trees
B. The small grasses and herbs would be replaced by lichens and mosses
C. Considering the grasses and herbs have insects, we have reached climax community of this ecosystem
D. Next this ecosystem would develop enough soil for bushes, shrubs, and flowers to take root.
help me please help me please
Answers
Answer:
d
Explanation:
Why Do You Think Soil Erosion Increased Over Time ?
Answers
Why does diuron cause coral to bleach
Answers
Simple answer:
When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white. Warmer water temperatures can result in coral bleaching. ... This is called coral bleaching. When a coral bleaches, it is not dead.
More in depth explanation:
Exposure to higher (100 and 1000 µg l-1) diuron concentrations for 96 h caused a reduction in ΔF/Fm¹, the ratio variable to maximal fluorescence (Fv/Fm), a significant loss of symbiotic dinoflagellates and pronounced tissue retraction, causing the corals to pale or bleach.
Hope this helped :)
Which animal is the Frantic Fox closest relative?
Responses
1. Coyote
2. Domestic Dog
Answers
Answer:
1. Coyote
Explanation:
The closest relative of the frantic fox is the coyote. They are both members of the Canidae family, which also includes wolves, jackals, and dingoes. Frantic foxes and coyotes share many similarities, including their physical appearance, behavior, and diet. Both animals are medium-sized canines with long snouts, pointed ears, and bushy tails. They are also both omnivorous, meaning they eat both plants and animals. Frantic foxes and coyotes are both social animals that live in packs. They are also both very adaptable and can live in a variety of habitats, including forests, deserts, and grasslands.
Domestic dogs are also members of the Canidae family, but they are not as closely related to frantic foxes as coyotes are. Domestic dogs are descended from wolves, while frantic foxes are descended from a different type of canid called the golden jackal. Domestic dogs and frantic foxes share some similarities, such as their physical appearance and diet. However, they also have some important differences, such as their behavior and social structure. Domestic dogs are typically more friendly and trusting of humans than frantic foxes are. They are also more likely to live in close association with humans, while frantic foxes are more likely to live in the wild.
A bird-watcher sees a small yellow bird in a tree. explain to the bird-watcher how he can use a dichotomous key to identify the bird. assume he does not know anything about dichotomous keys. then, write two steps of a dichotomous key that would be helpful for the bird-watcher.(2 points)
Answers
At each step, a dichotomous key divides proof of identity into two mutually preferential options. To use the key, the scientist begins at the top and determines which of the two options applies to their organism. The key directs them to a new question based on their response.
What is dichotomous key?This key aids in the identification of organisms by directing the attention to identify the organisms.
The steps to use a dichotomous key are:
Organize the characteristic of the organism.Divide the specimen.Draw a dichotomous key either text-based or graphical.Check out for the unknown organism.Thus, these are the steps that the bird-watcher can use for identifying the bird.
For more details regarding dichotomous key, visit:
https://brainly.com/question/2235448
#SPJ1
Which is a feature of a cladogram?
A The characteristics must be shared among the organisms.
B The characteristics must be different among the organisms.
C It must contain at least three different shared characteristics.
D It must contain at least three different groups of organisms.
Answers
Answer:
C
Explanation:
in order to survive in its environment a single celled organism uses a contractile vacuole to remove excess water that diffuses into its cell. Another species a hydra also excretes excess water. Both processes involve the use of energy. Based on this information, state whether these two organisms live in fresh water or salt water support your answer
Answers
Answer:
They would live in salt water.
Explanation:
Salt water is a hypertonic solution where water needs to move outside of the cell because there is too much solute outside. Because the 2 organisms are removing excess water, it shows that they are living in salt water where water flows outside instead of inside the cell.
Based on the available information, these two organisms would:
Live in salt waterAccording to the given question, we can see that there is a need for survival which makes a single celled organism to make use of the vacuole to remove the excess water which it diffuses into its cell.
As a result of this, we can see that another specie, a hydra also excretes excess water which involves the use of energy.
Therefore, the conclusion we can reach about them is that they are living in salt water because it is a hyper tonic solution which allows water to move freely outside the cell because of the excess solute outside the cell wall.
Read more here:
https://brainly.com/question/15887615
if an animal cell were placed in a solution of salt water taken from the ocean, what would happen to the cell?
Answers
A cell placed in a saline solution would lose water because, through the process of osmosis, water would migrate from the cell to the surrounding hypertonic medium, causing it to shrivel up.
The hypertonic water solution would cause the cell to shrink. Small water molecules may flow through the phospholipid bilayer via passive diffusion. This layer functions as a semi-permeable membrane, allowing water molecules to diffuse across the cell wall all along concentration gradient because its hydrophilic heads were attracted to water as well as its moisture hydrophobic tails facing each other. Similar to osmosis, water travels from areas of high osmotic stress and strain to areas of low pressure/concentration before reaching a steady state when it passes thru the membrane because of the difference of osmotic along either side of a phospholipid by layer.
(If an animal cell where placed in a solution of salt water taken from the ocean , what would happen to the cell ?A.)the cell would shrivel because the water solution is hypertonic
C.) the cell would shrivel because the water solution is hypotonic
D.) the cell would swell because the water solution is hypertonic)
Learn more about cells
https://brainly.com/question/25987617
#SPJ4
Help me please!!!!!!
Answers
Answer:
D. Receptors in the eye respond to a different type of input than receptors in the skin.
Explanation:
The sensory receptors in the eye have a different structure than the sensory receptors in the skin because the sensory receptors in the eye respond to a different type of input than receptors in the skin. There is always a relation between structure and function. The structure is modified in such a way that it can perform a particular function. For example, the eye is made to receive the light signal while receptors in the skin are made to receive signals such as touch, heat, cold, etc. Thus the sensory receptors have a different structure according to the signal they receive.
But why are the other answers wrong?
A. There is no relation between the number of receptors and the function of receptors in different organs of our body.
B. All the sensory receptors send signals to the brain.
C. All the sensory receptors are connected with nerve cells.
I hope this helps!!
- Kay :)
Out of the four "ingredients for evolution" we talked about in class, which one provides all the raw material for evolutionary forces to act on? A. Mutation B. Selection C. Genetic Drift D. Gene Flow
Answers
The correct answer is A. Mutation.
Mutation provides all the raw material for evolutionary forces to act on. Mutations are random changes in an organism's genetic material (DNA). They can be caused by various factors such as errors during DNA replication, exposure to radiation or chemicals, or even spontaneous changes.
Mutations introduce new genetic variations into a population. These variations can lead to differences in traits among individuals. Evolutionary forces such as natural selection, genetic drift, and gene flow act upon these variations, determining their fate in a population over time.
Selection (B) refers to the process by which certain traits become more or less common in a population based on their impact on survival and reproduction. It acts on existing genetic variations but does not provide the raw material itself.
Genetic drift (C) is the random change in allele frequencies in a population due to chance events. It can lead to the loss of certain variations or fixation of others, but it does not create new genetic material.
Gene flow (D) is the movement of genes from one population to another through migration and interbreeding. While it can introduce new genetic material to a population, it is not the primary source of raw material for evolutionary forces.
In summary, while selection, genetic drift, and gene flow are important evolutionary forces, mutation is the fundamental process that generates new genetic variations, providing the raw material for these forces to act upon.
learn more about Mutation here
https://brainly.com/question/13923224
#SPJ11
What could happen to homeostasis if the nervous system and the endocrine system stop communicating?.
Answers
The nervous and endocrine systems are closely related and both are closely involved in conditions of homeostasis. Endocrine dysfunction can lead to a variety of neurological symptoms such as acute encephalopathy including headache, myopathy and coma.
What is homeostasis?In biology, homeostasis is the state of stable internal physical and chemical conditions maintained by a biological system. This is the condition for an organism to function optimally, and many variables such as body temperature and fluid balance must be kept within preset limits.Homeostasis, as currently defined, is a self-regulatory process by which biological systems maintain stability while adapting to changing external conditions.Plasma ionized calcium homeostasis. Arterial blood pressure homeostasis. Core body temperature homeostasis. Homeostasis of body water content.Homeostasis maintains optimal conditions for enzyme action and all cellular functions throughout the body. Maintaining a constant internal environment even when internal and external conditions change.In the human body, this includes controlling: blood sugar concentration.To learn more about homeostasis from the given link :
https://brainly.com/question/3888340
#SPJ4
The Linnaeus classification system grouped organisms by ________. a. linear hierarchy of the scala naturae b. increasingly more general categories c. increasingly more complex categories d. environmental location
Answers
The correct option is (b) increasingly more general categories
The Linnaeus classification system grouped organisms by increasingly more general categories.
What is Linnaeus classification system?Linnaeus grouped all living things into two main groups (Kingdoms) that he dubbed "plants" and "animals" in an effort to utilize a "natural" classification system or taxonomic ordering. Therefore, it was necessary to categorize all recently discovered organisms into one of these categories initially. It "felt natural," He categorized things into seven layers of groups within groups, including the kingdom, phylum, class, order, family, genus, and species. Since Linnaeus' time, other levels have been created, so this was arbitrary.Learn more about the Linnaeus classification system with the help of the given link:
https://brainly.com/question/3470033
#SPJ4
9. Natural selection explains how ______
change as their environments
Answers
Answer:
Organisms
Explanation:
Natural selection is when organisms adapt to their environment due to "survival of the fittest".
Which is the greatest contribution of Gregor Mendel to society? an ability to beautify the environment the variety in breeds of dogs and cats the increased speed by running horses an understanding of genetic principles
Answers
Answer:
e the increased speed
Explanation:
Answer:C.the increased speed by running horses
Explanation:
Which organisms inhaled CO2 and exhaled 02 to 100s of millions of years, increasing the amount of O2 in the atmosphere?
Answers
Answer:
Plants
Explanation:
Plants 'inhale' CO2 and 'exhale' O2.
A geneticist claims that four species of fruit flies should appear in the ratio
Answers
There are sufficient evidences which are of 5% significance level to reject the claim.
What is chi-square test?A statistical test used to compare observed results with expected results is referred to as the chi-square test.
According to the given scenario,
Ratio = 1:3:3:9Sample size = 2000Samples = 110, 345, 360, and 1185To calculate:
Evidence to make conclusion to the geneticist's claim.
Total fruits = 1 + 3 + 3 + 9 = 16
As per the expected number of fruit flies
Each species = 1/16(2000) = 125.3/16(2000) = 375.3/16(2000) = 375.9/16(2000)
Each species = 1125
According to Chi-Square test -
\(X^{2} =\epsilon\frac{(O_{i}-E_{i})^{2} }{E_{i}}\)
\(X^{2}\) = ( 110 - 125)²/125 + ( 345 - 375)²/375 + ( 360 - 375)²/375 + ( 1185 - 1125)²/1125
\(X^{2}\) = (15)²/125 + (30)²/375 + (15)²/375 + (60)²/1125
\(X^{2}\) = 8
with df = 4 - 1 = 3, and P( x² > 8) = 0.0460.
Thus, with a P-value, it is small, indicates 5% significance level to reject the claim.
For more details regarding the chi-square test, visit:
https://brainly.com/question/14082240
#SPJ4
10 POITNS BRAINLESS MULTIPLE CHOICE
Answers
Answer:
Eukaryotic and Animal.
Answer:
It's a eukaryotic cell.
hope this helped