Heart

Question 1

What are the muscles within the right atrium called?

Answer 1

Pectinate muscles

Question 2

What is the smooth surface next to the pectinate muscles called?

Answer 2

Crista terminalis

Question 3

What is the semitransparent part of the RA that closes after you are born?

Answer 3

Fossa ovalis

Question 4

What are the 3 cusps of the tricuspid valve?

Answer 4

• Anterior
• Posterior
• Septal

Question 5

What are the 3 combinations of cusps that provide redundancy of the heart?

Answer 5

• Anterior and septal
• Anterior and Posterior
• Posterior and septal

Question 6

What are the cusps connected to and how?

Answer 6

-Connected to papillary muscles by cordae tendonae

Question 7

What are the muscles on the side of the right ventricle wall called?

Answer 7

Trabeculae carnae

Question 8

Where is the septal cusp located?

Answer 8

Along the septum between the ventricles

Question 9

Each cusp receives cordae tendonae from ___ papillary muscles

Answer 9

2

Question 10

What muscle is located on the wall of the right ventricle?

Answer 10

Trabeculae carnae

Question 11

What is the thicker piece of trabeculae carnae called that is located near the bottom of the right ventricle?

Answer 11

Moderator band

Question 12

What is another name for moderator band?

Answer 12

Septomarginal trabecular (speeds up conduction)

Question 13

How does blood move from right ventricle to the lungs?

Answer 13

Pulmonary truck

Question 14

What is the dilated portion leading to the pulmonary truck?

Answer 14

Conus arteriosus

Question 15

What direction does the outflow tract of the aorta go?

Answer 15

To the left

Question 16

What are the 3 cusps in the pulmonary valve?

Answer 16

• Right semilunar cusp
• Left semilunar cusp
• Anterior semilunar cusp

Question 17

Anterior cusp–>

Answer 17

Pulmonary truck

Question 18

Posterior cusp–>

Answer 18

aortic

Question 19

How many opening for pulmonary veins are there?

Answer 19

4- 2 from each lung

Question 20

What are the cusps of the mitral valve?

Answer 20

• Anterior cusp

- Posterior cusp

Question 21

How many papillary muscles does the mitral valve have?

Answer 21

2

Question 22

What ventricle is thicker?

Answer 22

Left- because it pumps against vascular resistance

Question 23

How many cusps does the aortic valve have?

Answer 23

3

Question 24

What are the names of the cusps on the aortic valve?

Answer 24

• Right semilunar cusp
• Left semilunar cusp
• Posterior semilunar cusp

Question 25

What are the pockets in the cusps called?

Answer 25

-Aortic sinuses

R, L, and posterior aortic sinuses

Question 26

Where do the openings in the right and left aortic cusps lead to?

Answer 26

Right–> leads to right coronary artery

Left–> leads to the left coronary artery

Question 27

Is the left coronary artery short or long?

Answer 27

Short- quickly bifurcates into -Anterior descending coronary artery
-Left circumflex coronary artery

Question 28

What is the path of the right coronary artery?

Answer 28

Wraps around posteriorly

-and gives of posterior descending coronary artery

Question 29

What vein travels with the descending coronary artery?

Answer 29

Great cardiac vein

Question 30

What collects blood from all of the cardiac veins?

Answer 30

Coronary Sinus

Question 31

What veins directly empty into the right atrium?

Answer 31

Anterior veins