Heart 2

Question 1

What are features of the right atrium?

Answer 1

on the post/lat surfaces are the musculi pectinati and the cristae terminalis.
The fossa ovalis is the closed off foramen ovale

Question 2

What is the anatomy of the tricuspid (and mitral) valve?

Answer 2

A cuff and cusp attached to the papillary muscles of the ventricle by chordae tendineae

Question 3

What are features of the right ventricle?

Answer 3

Trabeculae carnae- the muscle
Septomarginal trabecula/ Moderator band- to help impulses reach the ant heart surface and for papillary muscles.
Ant, post and septal papillary muscles

Question 4

What are features of the left atrium?

Answer 4

The pulmonary veins collect here and the only muscular part of the wall is the left auricle.

Question 5

What are features of the left ventricle?

Answer 5

Trabeculae carnae (3x thicker than RV)
ant and post papillary muscles

Question 6

From an aerial view what are the locations of the vavles/arteries?

Answer 6

ANT: Pul trunk
POST: aorta with coronary vessels coming off

NOTE anteriorly, tricuspid and aortic are more on the right with the mitral and pul trunk on left

Question 7

Where is it best to asucultate the 4 valves?

Answer 7

TRICUSPID: left parasternal edge of rib 5
PUL. TRUNK: left parasternally in the 2nd IC space
MITRAL: apex of heart (mid clav IC space 5)
AORTIC: Right parasternally IC space 2

Question 8

What will happen when the right/left coronary arteries are blocked?

Answer 8

Right: Rhythm distractions due to lack of blood to SA node and AV node

Left: Pump failure due to left ventricle not working well