A. Fill in the blanks.
1. The heart is a part of the......
system
2. The main constituent of plasma is.......
3. A mature RBC has no.......
4. Platelets help in the........
of blood.
5. People with the blood group
........are called universal donors.
6. Heart muscles are called.......
muscles.
7. The two lower chambers of the heart are called........
8. The contraction of the heart muscles is called........
9. The throbbing or the swelling of the arteries as they receive blood is called........
10. The pressure exerted on the walls of the blood vessels by the circulating blood is called.........
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Answer:
1. Circulatory system
2.albumin ( protein )
3. DNA
4.Clotting
5.O negative
6.cardiac
7. Ventricles
8. Cardiac muscle contraction and heartbeat is regulated by a process known as excitation–contraction coupling (ECC).
9.An aneurysm—a balloon-like bulge in an artery—can develop and grow for years without causing any symptoms.
10.Blood pressure (BP), sometimes referred to as arterial blood pressure, is the pressure exerted by circulating blood upon the walls of blood vessels, and is one of the principal vital signs.
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