Heart

Question 1

Ligamentum arteriosum is a vestigial remnant of the

Answer 1

Ductus Arteriosus

Question 2

the Ductus Arteriosus served as a conduit between the _____ and the ____ in fetal life

Answer 2

Pulmonary Artery

Aortic arch

Question 3

Visceral layer of the serous pericardium which covers epicardial fat and the myocardium

Answer 3

Epicardium

Question 4

Middle, muscular layer of the cardiac tissue

Answer 4

Myocardium

Question 5

Endotheleal lining of all the chambers

Answer 5

Endocardium

Question 6

Inflammation of the lining o the heart chambers

Answer 6

Endocarditis - can lead to heart valve defects

Question 7

Track DVT from right iliac vein

Answer 7

Right Iliac Vein > Inferior Vena Cava > Right Atrium > Tricuspid Valve > Left Atrium > Pulmonic Valve > R or L Pulmonary Artery > Lungs

Question 8

What protects the heart’s coronary vessels?

Answer 8

Epicardial fat

Question 9

The right coronary artery lies in a groove between which two structures?

Answer 9

Right atrium and Right Ventricle, within the “coronary sulcus”

Question 10

Which vessel does the great cardiac vein travel with?

Answer 10

LAD (Left Anterior Descending)

Question 11

Where is the SA node located and where does its blood supply come from?

Answer 11

Located between the Superior Vena Cava and the Right Atrium

Supplied by the Sinuatrial nodal Branch of the Right Coronary Artery 55% of time

Supplied by branch of Circumflex Branch of Left Coronary Artery 45%

Question 12

What vein runs with the PDA (posterior descending artery)

Answer 12

Middle Cardiac Vein

Question 13

What vein runs with the Circumflex Branch of LCA

Answer 13

Posterior of Great Cardiac Vein

Question 14

Which arteries supply the left ventricle

Answer 14

Left Anterior Descending a. (from LCA)

Circumflex a. (LCA)

Left marginal a (from LCA)

Posterior Descending Artery (L or R supplied)

Question 15

Which artery supplies the AV node?

Answer 15

Right Coronary Artery , at the “Crux” - posterior

Question 16

What is left heart dominance?

Answer 16

only 15% of people, Left Circumflex branch supplies the PDA

Question 17

Right heart dominance?

Answer 17

Right coronary artery supplies the PDA, 85% of people

Question 18

Trace branches / flow of Right Coronary Artery

Answer 18

RCA > 
SA nodal a. (60%) > 
Right marginal a. (RV) > 
AV nodal a. >
PDA ( RV, LV, IV septum) 

RCA supplies the
right atrium,
right ventricle,
inferior portion of inter ventricular septum

Question 19

Trace branches / flow of Left Coronary Artery

Answer 19

LCA >
Anterior IV a. ( RV, LV, IC septum) >
Circumflex a. ( posterior LV) >
Left marginal a. (LV) >
SA nodal a. (40%)

LCA supplies the
left ventricle,
left atrium,
upper portion of inter -ventricular septum

Question 20

Which arteries supply the right ventricle?

Answer 20

Right marginal a (RCA)

Posterior Descending a. (RCA)

Anterior Descending a. (LCA)

Question 21

Which arteries supply the inter ventricular septum?

Answer 21

PDA (from RCA)

ADA (from LCA)

Question 22

Which is one set of cardiac veins that do not drain into coronary sinus?

Answer 22

Anterior cardiac veins

Question 23

What does the foramen ovale turn into?

Answer 23

Fossa Ovalis

Question 24

Anatomical name for “moderator band”?

Answer 24

Septomarginal trabecula

Question 25

Anatomical name for heartstrings?

Answer 25

Chordae tendinae

Question 26

Trabeculae carnaea?

Answer 26

striated muscle ish fibers on wall of ventricle

Question 27

Aortic vestibule describes what area?

Answer 27

Area just inferior to aortic valve (leading from L ventricle to aorta)

Question 28

Name the 6 areas of conduction / fibers

Answer 28

SA node (R atrium, near Superior vena cava) AV node (R atrium, near septum) Bundle of His Right bundle branch Left bundle branch Purkinje fibers

Question 29

Dense collagen fibrous rings surrounding each valve

Answer 29

Annuli Fibrosis

Question 30

Describe 3 functions of the heart's fibrous skeleton

Answer 30

1. Point of attachment/insertion for cardiac muscle 2. Electrical insulation between ventricles 3. Ensure 0.1 second pause in signal conduction between atria and ventricles

Question 31

Which annulus fibrosis is responsible for the 0.1 sec delay in conduction between atria and ventricles?

Answer 31

Tricuspid valve's annulus fibrosis

Question 32

Describe position of each bundle branch (R, L)

Answer 32

They are on each lateral aspect of the muscular inter ventricular septum

Question 33

Auscultation point for Tricuspid valve

Answer 33

Left 4th-5th intercostal space

Question 34

Auscultation point for Pulmonary valve

Answer 34

Left 2nd intercostal space

Question 35

Auscultation point for Mitral valve

Answer 35

Left 5th intercostal space

Question 36

Auscultation point for Aortic valve

Answer 36

Right 2nd intercostal space