Circulatory System Questions and Answers
Terms in this set (6)
What is the circulatory system?
The system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
Why is oxygen important to blood and to the cells?
Oxygen is important to blood cells because oxygen is needed to make energy for our body.
Which type of blood vessels carries blood away from the heart?
There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.
Why is blood that flows from the lungs to the heart bright red rather than dark red?
Oxygen makes it red
Where does the oxygen rich blood enter first in the heart?
From what source do cells get their food?