Anatomy Lecture 16_Heart & CV

Question 1

What are the three names for the left AV valve?

Answer 1

Left atrioventricular valve, the bicuspid valve, and the mitral valve

Question 2

What are the two names for the right AV valve?

Answer 2

Right atrioventricular valve, tricuspid valve

Question 3

How many flaps (cusps) are on the semilunar valves?

Answer 3

3. The pulminary vein has a right, left and anterior flap while the aorta has a right, left, and posterior flap.

Question 4

What part of the heart cycle causes the “lub” sound?

Answer 4

closure of the AV valves

Question 5

What part of the heart cycle causes the dub sound?

Answer 5

Closure of the semi lunar valves

Question 6

What parasympathetic nerve innervates the heart?

Answer 6

The vagus nerve!

Question 7

What sympathetic nerves innervate the heart?

Answer 7

T1-T5

Question 8

What nerves innervate the Larynx

Answer 8

The vagus nerve innervates the larynx. recurrent laryingial nerves (branches of the vagus) innervate the posterior aspect.

Question 9

What heart landmark can help identify the recurrent laryingial nerves?

Answer 9

They wrap inferior to the arch of the aorta.