Anatomy

Question 1

Pericardium Access

Answer 1

Notch in lung around ~5th L IC space where you can get to w/out causing pneumothorax

Question 2

Ligamentum Arteriosum

Answer 2

Extends from aorta to pulmonary a., L recurrent laryngeal n. passes around so if you nick it get hoarseness/laryngeal paralysis on that side

Question 3

Fossa Ovalis

Answer 3

Remnant of foramen ovale b/w 2 atria

Question 4

Chordae Tendinae

Answer 4

In ventricles, attach atrioventricular valves to papillary muscles

Question 5

Trabeculae Carnea

Answer 5

Found in walls of vents (& L atrium)

Question 6

Musculi Pectinati

Answer 6

Rough part of walls of atria (mainly R)

Question 7

Marginal Band

Answer 7

Septomarginal trabeculae, in R vent

Question 8

Valves at Systole/Diastole

Answer 8

Sys: Semilunars open, AVs closed
Dias: Opposite

Question 9

Coronary Artery/Vein Pairs

Answer 9

Great cardiac vein - ant intervent a. and then circumflex a.
Middle cardiac vein and post. interventricular a.
Small cardiac v. and acute marginal a.

Question 10

Acute Marginal A.

Answer 10

Comes off R. coronary a. around lower border

Question 11

Heart Dominance

Answer 11

Where posterior intervent a. comes off - majority R coronary artery, occasionally circumflex a. (off L coronary a.), about 15% codominance

Question 12

Cardiac Nerve (sympathetic) Pathway

Answer 12

Pregangs of intermediolateral cell column T1-L2, then go into sympathetic chain but don’t synapse until they ascend into cervical ganglia. Then synapse and descend back down to heart

Question 13

Cardiac Plexus

Answer 13

Plexus of n.s right on aorta and shit that contain cardiac n.s and parasymp postgang cell bodies (and shit)

Question 14

Heart Innervation Pathway

Answer 14

SA node -> purkinje fibers through atria -> AV bundle (of His) -> R bundle branch w/ moderator band and L bundle branch