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erica [24]
3 years ago
12

How do oxygen and carbon dioxide cross capillary walls?

Biology
1 answer:
muminat3 years ago
4 0
The answer is diffusion.

The most important mechanism that enables oxygen and carbon dioxide (but as well other small molecules such as glucose, amino acids, wastes) across capillary walls is diffusion. Diffusion is a net movement of molecules through some barrier from an area of high concentration to the area of low concentration. When blood rich in oxygen reaches capillaries close to the cell, now there <span>is </span>more oxygen in the capillaries than in the cells and by diffusion, oxygen will pass capillary walls and enter the cell. Since blood in capillaries lacks in carbon dioxide, it will easily leave the cells and enter the blood. It should be taken into consideration that capillary walls may be fenestrated, continuous, and discontinuous which can affect movement through them. 
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What fine-tuned sensory receptors detect differences in tension generated by active muscle rather than muscle length
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golgi tendon organs fine-tuned sensory receptors detect differences in tension generated by active muscle rather than muscle length.

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What is golgi tendon organs?

  • The Golgi tendon organ, which is located close to the point where a tendon joins a muscle, is a sensory ending that resembles a tree and is encased in a spindle-shaped connective tissue capsule.
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Learn more about golgi tendon organs

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4 0
2 years ago
In which type of cell are these structures found?
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Answer:

plants

Explanation:

plant cell

3 0
3 years ago
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A coral reef is an underwater structure that is home to many sea animals that use the water as a resource. Some animals are call
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Answer: ecosystem

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