Question

Exterior: e. The boundary between atria and ventricles is called _______________________ f. What marks the boundary between the ventricles on the anterior wall of the heart? _ g. What marks the boundary between the ventricles on the posterior wall of the heart?_ 9. Structure & Function of the Atria a. The right and left atria are the (discharging / receiving) chambers of the heart. b. Muscular pouches extending from the atria are called . Their function is to ______________________________________________________ c. Atria are _ (thin- / thick-) walled chambers, because _ __________________________________ d. The fossa ovalis is , located in the right atrium. e. The foramen ovale is _ that existed in the f. How do the left and right atria differ in their function? ____________ 10. Structure & Function of the Ventricles a. The right and left ventricles are the (discharging / receiving) chambers of the heart. b. Ventricles are _ (thin- / thick-) walled chambers, because _ c. How do the left and right ventricles differ in their structure? d. How do the left and right ventricles differ in their function? e. _ are thin strands of collagen fibers that attach the atrioventricular valves to _ muscles in the wall of the ventricles. 11. Heart Valves a. Name the 2 major types of valves. i. _ ii. _ 12. Semilunar valves are found only in _ (arteries or veins). The tricuspid valve is found in the _ (right or left) side of the heart; the bicuspid valve is found in the (right or left) side of the heart. 13. AV valves prevent backflow into the _, whereas the semilunar valves prevent backflow into the _______.

Exterior:
e. The boundary between atria and ventricles is called
_________________________________________________
f. What marks the boundary between the ventricles on the anterior wall of the heart?
_________________________________________________
g. What marks the boundary between the ventricles on the posterior wall of the
heart?___________________________________________
9. Structure & Function of the Atria
a. The right and left atria are the ____________________(discharging / receiving) chambers of the heart.
b. Muscular pouches extending from the atria are called ____________________. Their function is to
__________________________________________________________________________________
c. Atria are _______________ (thin- / thick-) walled chambers, because ___________________________
__________________________________________________________________________________
d. The fossa ovalis is ______________________________________________________, located in the right atrium.
e. The foramen ovale is _______________________________________________________ that existed in the
__________________________________________________
f. How do the left and right atria differ in their function? ______________________________________
__________________________________________________________________________________
__________________________________________________________________________________
10. Structure & Function of the Ventricles
a. The right and left ventricles are the ____________________ (discharging / receiving) chambers of the
heart.
b. Ventricles are _______________ (thin- / thick-) walled chambers, because _________________________
__________________________________________________________________________________
c. How do the left and right ventricles differ in their structure? __________________________________
__________________________________________________________________________________
d. How do the left and right ventricles differ in their function? __________________________________
__________________________________________________________________________________
e. _________________________________ are thin strands of collagen fibers that attach the atrioventricular valves to
_______________________ muscles in the wall of the ventricles.
11. Heart Valves
a. Name the 2 major types of valves.
i. _______________________________________________
ii. _______________________________________________
12. Semilunar valves are found only in _____________________ (arteries or veins). The tricuspid valve is found in the
___________________ (right or left) side of the heart; the bicuspid valve is found in the __________ (right or left) side
of the heart.
13. AV valves prevent backflow into the ___________________________, whereas the semilunar valves prevent
backflow into the ___________________________.

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