Biology, 30.11.2021 19:30 chrisraptorofficial
The network of capillaries in the body is extensive, allowing capillaries close contact with cells of the body. Very few living cells lie farther than 0.01 mm from a capillary. Why do cells need to be close to capillaries? The close proximity of capillaries, along with their thin walls, allows for the exchange of materials between the blood and the body’s cells. As blood passes through a capillary, oxygen, glucose, and other substances in high concentration move out of the capillary toward nearby cells. Then those substances move across cell membranes and into the cells. At the same time, carbon dioxide and other waste products that are in high concentration inside the cells move across membranes into the blood carried by the capillary.
The circulatory system is just one example of a system of exchange in the human body. Right now, your circulatory system is making thousands of exchanges a second. At the same time, your urinary system and gas exchange system are making many thousands more exchanges. It makes working in a high-rise building seem simple, doesn’t it?
1. What are the main components of the circulatory system?
2. What is the function of the gas, circulatory, and urinary system?
3. How do each of these systems return to homeostasis?
4. Why do you think it is important for these systems to maintain homeostasis?
Answers: 2
Biology, 22.06.2019 05:30
What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?
Answers: 3
Biology, 22.06.2019 09:30
The ruiz family is exchanging euros for us dollars. the exchange rate is 1 euro equals 1.35261 usd. since the ruiz family knows that usd are stated to the nearest hundredth of a dollar, they used the conversion ratio
Answers: 1
Biology, 22.06.2019 13:00
Which type of landform forms at the plate boundary as a result of divergent stress
Answers: 1
Biology, 22.06.2019 16:40
Cells a and b are the same size and shape, but cell a is metabolically quiet and cell b is actively consuming oxygen. oxygen will diffuse more quickly into cell because . b the oxygen molecules inside cell b have a higher kinetic energy b. a its membrane transport proteins will not be saturated c. a the diffusion gradient there is shallowerd. b the diffusion gradient there is steeper
Answers: 2
The network of capillaries in the body is extensive, allowing capillaries close contact with cells o...
Mathematics, 23.12.2020 19:30
English, 23.12.2020 19:30
Mathematics, 23.12.2020 19:30
Biology, 23.12.2020 19:30
History, 23.12.2020 19:30
English, 23.12.2020 19:30
Mathematics, 23.12.2020 19:30
Mathematics, 23.12.2020 19:40
Computers and Technology, 23.12.2020 19:40