When blood enters the vast network of capillaries, called a(n) ____________, it is so dispersed that the rate of flow is reduced to a slow trickle, permitting time for [tex]\(O_2\)[/tex] and nutrients to enter the tissue cells in exchange for [tex]\(CO_2\)[/tex] and waste products.

Select one:
a. capillary bed
b. vena cava
c. infarction
d. arteriole branch

Capillary beds are the vast network of capillaries where blood flow is dispersed, allowing for nutrient and gas exchange with tissue cells. This slow flow rate facilitates the exchange of oxygen, carbon dioxide, and waste products at the cellular level.

When blood enters the capillary beds, it is so dispersed that the rate of flow is significantly reduced, enabling sufficient time for oxygen and nutrients to enter tissue cells and exchange for carbon dioxide and waste products.

The walls of the capillaries are made of a single layer of endothelial cells, allowing for the diffusion of essential molecules such as oxygen and water, as well as waste products like carbon dioxide, ensuring efficient exchange for cellular function.

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