Question

Capillaries have thin walls (one cell thick) to allow glucose and oxygen to diffuse through them. They are also used to connect arteries to veins.

Accepted Answer

Capillaries have thin walls (one cell thick) to allow glucose and oxygen to diffuse through them. They are also used to connect arteries to veins.

Text	Capillaries have thin walls (one cell thick) to allow glucose and oxygen to diffuse through them. They are also used to connect arteries to veins.
Text2	Capillaries have thin walls (one cell thick) to allow glucose and oxygen to diffuse through them. They are also used to connect arteries to veins.

Capillaries Thin Walls Cell Thick Glucose Oxygen Diffuse