Hint: There are multiple correct answers. Choose all that apply. 1.*The primary function of the circulatory system is to transport nutrients, gases, hormones and wastes throughout the body.
2. *The Interventricular septum the heart prevents blood from flowing from the right to the left sides of the heart.
3. The valves are flaps that are located on each end of the two ventricles of the heart.
A. They prevent blood from flowing backwards.
B.They prevents blood from flowing forwards.
4. The primary function of the circulatory system is to transport nutrients, gases, hormones and wastes throughout the body.
5) As blood travels from the aorta to the capillaries:
a) pressure increases
b) viscosity increases
c) resistance increases
d) velocity increases
e) flow increases
6) The space in the middle of the thoracic cavity where the heart resides is the:
a) Abdominal cavity
b) superior mediastinum
c) pleural cavity
e) dorsal cavity
7) The foramen oval in the fetal heart is located in the:
a) right atrium
b) left atrium
c) interventricular septum
d) interatrial septum
e) pulmonary trunk
8) Which blood vessel does NOT bring blood directly to the heart? a) great cardiac vein
b) coronary sinus
c) inferior vena cava
d) superior vena cava
9) If communication between the SA node and the AV node becomes blocked which is most certainly affected: a) the ventricles will contract at a slower rate
b) after load will increase
c) the atria will contract at a slower rate
d) stroke volume will increase
e) all of the above
10) A valve damaged by rheumatic fever fails to open completely. This is called: a) stenosis
b) heart block
11. Blood returning from the lungs enters the heart through the: a) pulmonary semilunar valve
b) mitral valve
c) right ventricle
d) left atrium
e) vena cava
12. During ventricular systole:
a) the atria are contracting
b) the AV valves are closed
c) the pressure inside the ventricles is less than in the atria d) the mitral valve is closed
e) blood is ejected into the atria
13. In general, veins exhibit this characteristic when compared to arteries:
a) are thinner walled
b) have more smooth muscle in the tunica media
c) carry faster moving blood
d) have thicker endothelium
e) are more elastic
14. Identify the structure:
No…1…Superior vena cava
No…5…Posterior papillary muscle
15. Identify the structure:
No…6…Superior Vena Cava No….10..Arch of the aorta No….5…Right and left Brachiocephalic vene. No….4...Brachiocephalic artery No….1…Right Common carotid artery No….9…Left subclavien artery No....7…Left common carotid artery...
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