Heart and lung

Question 1

When does the trachea branch to R and L?

Answer 1

Transverse thoracic plane

Question 2

Where is the carina?

Answer 2

The midline where the bronchus bifurcates.

Question 3

What is complete deflation of the lung called?

Answer 3

Atelectasis

Question 4

The pulmonary valve has a right, left, and _______ cusp.

Answer 4

Anterior

Question 5

The aortic valve has a right, left, and _______ cusp.

Answer 5

Posterior

Question 6

Where do you find pectinate muscles?

Answer 6

Anterior portion of right atrium

Question 7

What marks the change from rough to smooth surfaces inside the RA?

Answer 7

Crista terminalis

Question 8

What is the opening of coronary sinus?

Answer 8

A hole into the RA that drains venous blood from the heart itself

Question 9

What is the fossa ovales?

Answer 9

Closed foramen ovale

Question 10

What do the right auricles do?

Answer 10

Extra space that expands if blood returning to the heart greatly increases (e.g. during exercise)

Question 11

What are the trabeculae carnae?

Answer 11

Muscular ridges of RV

Question 12

What are chordae tendinae?

Answer 12

Cords that stabilize the tricuspid valve cusps.

Question 13

What are papillary muscles?

Answer 13

Muscles that contract to tighten chordae tendinae

Keep the valve closed during ventricular contraction

Question 14

What are the branches of the right coronary artery?

Answer 14

Sinoatrial nodal a.
R. Marginal a.
Posterior interventricular a.

Question 15

What are the branches of the left coronary artery?

Answer 15

Anterior interventricular a. (LAD)

Circumflex a.

Question 16

What are the cardiac veins and where are they?

Answer 16

Great cardiac vein (found w/ LAD)
Middle cardiac vein (found w/ posterior interventricular a.)
Small cardiac vein (found w/ right marginal a.)

Question 17

Where do the cardiac veins drain?

Answer 17

Coronary sinus

Question 18

What makes up the first heart sound (lub)?

Answer 18

Closing of mitral and tricuspid valves

Question 19

What makes up the second heart sound (dub)?

Answer 19

Closing of aortic and pulmonary valves

Question 20

Where can you place the stethoscope to hear the tricuspid valve close?

Answer 20

At the 5th intercostal space slightly to the left of the sternal border.

Question 21

What attaches to the manubrium?

Answer 21

1st and 2nd ribs
Body of sternum
Clavicle