ANATOMY

GENERAL ANATOMY

CARDIOVASCULAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
During capillary exchange, what substances are distributed to the cells?
A
nutrients
B
hormones
C
oxygen
D
all of the choices
Explanation: 

Detailed explanation-1: -Capillary exchange involves exchanging materials through capillary membranes. The exchanged materials include gasses, nutrients, hormones, wastes, carbon dioxide, lipid-soluble substances, and other molecules in the blood.

Detailed explanation-2: -Oxygen diffuses through the capillary wall, into the tissue fluid and the cells. Carbon dioxide diffuses from the cells into the tissue fluid, then across the capillary walls into the blood plasma . Glucose diffuses from the blood plasma, across the capillary walls to the tissue fluid, and then to the cells.

Detailed explanation-3: -Oxygen and food nutrients pass from these capillaries to the cells. Capillaries are also connected to veins, so wastes from the cells can be transferred to the blood.

Detailed explanation-4: -Capillary exchange refers to the exchange of material between the blood and tissues in the capillaries. There are three mechanisms that facilitate capillary exchange: diffusion, transcytosis, and bulk flow.

There is 1 question to complete.