Heart Anatomy

Question 1

Name the conducting pathway of the heart in order.

Answer 1

SA, AV, Bundle of His, R+L bundle branches, Perkinje fibres.

Question 2

What’s the name of the bundle that conducts the SA potential to the left atrium again?

Answer 2

Bachmann’s bundle.

Question 3

What’s the right ventricle’s equivalent of the aorta?

Answer 3

Pulmonary trunk.

Question 4

The semilunar valves separate the atria/ventricles or the ventricles/arteries?

Answer 4

The semilunar valves border the ventricles and the arteries.

Question 5

The semilunar valves are called the ________ valve and the _________ valve.

Answer 5

pulmonary valve

aortic valve

Question 6

Just to reiterate in a different way, the left semilunar valve is at the base of the _______ while the right semilunar valve is at the base of the _________.

Answer 6

Left: base of the aorta
Right: base of the pulmonary trunk

Question 7

What’s the one artery in the entire body that carries deoxygenated blood? Where does it emerge from?

Answer 7

The PULMONARY trunk

from the RIGHT ventricle

Question 8

What’s the one vein in the entire body that carries oxygenated blood? Where does it emerge from?

Answer 8

The PULMONARY vein

Question 9

We knew about the superior and inferior vena cava - what’s the third vein entry into the heart?

Answer 9

The coronary sinus. It pokes in from the back around about the level of the coronary sulcus.

Question 10

What’s the valve with the confusing double name for some reason?

Answer 10

bicuspid aka mitral valve.

Just remember “trail bike” i.e miTRAL and BICuspid.

Question 11

What is cited as the normal resting heart beat?

Answer 11

72bpm.

Question 12

Cranial Nerve X is called the _____ nerve.

Answer 12

Vagus.

Question 13

The ___ nerve provides the parasympathetic innervation to the heart and reduces the constitutive SA ____ bpm down to a reasonable ___ bpm.

Answer 13

vagus; 120bpm; 70-80

Question 14

The SA node wants to beat at ___ bpm but vagus control holds it down at ___.

Answer 14

120; 70-80

Question 15

What does “sternocostal” mean?

Answer 15

That’s the word for what the heart looks like from the front. I.e. the view that’s mostly left ventricle.
The posterior view is the “diaphragmatic” side.

Question 16

What’s another word for the Bundle of His?

Answer 16

The atrioventricular bundle.

Question 17

The three parts of the aorta are easy. What are they?

Answer 17

The ascending aorta goes up out of the left ventricle,
The aortic arch arches (has the offshoots)
The descending aorta descends off the arch.

Question 18

The pulmonary trunk splits into the what?

Answer 18

The left and right pulmonary arteries.

Question 19

The right and left coronary arteries originate from the __________ artery just above the level of the ___________.

Answer 19

ascending aorta

aortic (left semilunar) valve

Question 20

The left coronary artery wraps around from ________ and the right coronary artery wraps around from _______.

Answer 20

Left: wraps from behind.
Right: wraps from in front.

Question 21

The _______ and ________ _________ pericardia sandwich the pericardial fluid. The __________ is heart-facing and the __________ is fibrous-facing.

Answer 21

visceral and parietal serous pericardia;

visceral: heart facing
parietal: fibrous facing