Question

The thin, narrow structure of the capillaries is well-suited to their function because the capillaries _____.

A) only carry the liquid portion of blood
B) transport substances directly to the body cells
C) require only a small amount of oxygen to function
D) have the opposite function of arteries and veins

Answer 1

The correct option is B. The capillaries transport substances directly to the body cells and their structure enables reduction of diffusion distance.

Answer 2

Correct answer choice is :

B) Transport substances directly to the body cells

Step-by-step explanation:

Capillaries are very thin blood vessels that were first found in frog lungs in 1661. They bring nutrients and oxygen to muscles and eliminate trash products. They are only one cell thick, and they are the sites of the transferal of oxygen and other nutrients from the bloodstream to other muscles in the body, they also accumulate carbon dioxide waste elements.