Heart

Question 1

What are the first two branches of the ascending aorta?

Answer 1

Right and Left Coronary Arteries

Question 2

What two arteries come off of the Left Coronary Artery?

Answer 2

Anterior Interventricular and Circumflex

Question 3

What 4 arteries come off of the Right Coronary Artery?

Answer 3

• Posterior Interventricular Artery
• Right Marginal
• SA Nodal Artery (60% of population)
• NA Nodal Artery (80% of population)

Question 4

Right Coronary Artery Supplies:

Answer 4

• Right Atrium
• Right Ventricle
• Left Ventricle
• Posterior 1/3 of AV Septum
• SA Node (60%)
• AV Node (80%)

Question 5

Left Coronary Artery Supplies:

Answer 5

• Left Atrium
• Left Ventricle
• Right Ventricle
• IV Septum and AV Bundle
• SA Node (40% of population)

Question 6

What artery comes off of the circumflex?

Answer 6

Left Marginal

Question 7

Right Coronary Artery is dominant what percentage of the time?

Answer 7

75%

Question 8

What veins drain into the coronary sinus?

Answer 8

• Great Cardiac V.
• Middle Cardiac V.
• Small Cardiac V.
• Left Marginal V.
• Left Posterior Interventricular V.

Question 9

Where do the Anterior Cardiac Veins drain?

Answer 9

Directly into the Right Atrium.

Question 10

What are the smallest cardiac veins and what do they drain into?

Answer 10

Vena Cordis Minimi, right atrium

Question 11

Where is the SA Node located?

Answer 11

Subepicardium near the SVC and the upper crista terminalis

Question 12

This is the pacemaker of the heart.

Answer 12

AV Node

Question 13

Fibers that connect to the cardiac muscles causing contraction:

Answer 13

Purjinke Fibers

Question 14

This node is found in the interatrial wall near the opening of the coronary sinus:

Answer 14

AV Node

Question 15

Provides Pre-ganglionic parasympathetic, fibers and GVA fibers to the heart:

Answer 15

Vagus Nerve

Question 16

Provide postganglionic sympathetic fibers to the heart:

Answer 16

Thoracic Splanchnic and Cervical Cardiac Nerves (T1-T4)

Question 17

Where can the pulmonic sound be heard?

Answer 17

2nd left intercostal space, lateral to the sternum.

Question 18

Where can the aortic sound be heard?

Answer 18

2nd right intercostal space lateral to the sternum

Question 19

Where can the tricuspid sound be heard?

Answer 19

over lower portion of the sternum

Question 20

Where can the Mitral sound be heard?

Answer 20

5th left intercostal space, 1/2 inch medial to the midclavicular line

Question 21

Where is Erb’s Point and what sound can be heard there?

Answer 21

left sternal border at 3rd ICS where S2 is best heard

Question 22

What produces the first heart sound?

Answer 22

Closure of the AV Valves

Question 23

What produces the second heart sound?

Answer 23

Closure of the semilunar valves (pulmonic and aortic, S1-S2)

Question 24

It is normal to hear a third heart sound in:

Answer 24

Athletic children

Question 25

The apex of the heart is found in which intercostal space?

Answer 25

5th

Question 26

How much fluid does the pericardial cavity contain?

Answer 26

5-30mL

Question 27

Fluid leaking into the cardiac cavity due to rupture of arteries around the heart:

Answer 27

Pericardial Effusion

Question 28

Blood leaking into the pericardial cavity preventing the heart from expanding (from a stab wound):

Answer 28

Cardiac Tamponade

Question 29

What makes up the sternocostal surface?

Answer 29

Right Ventricle

Question 30

What makes up the left pulmonary surface?

Answer 30

Left ventricle and left atrium

Question 31

What makes up the right pulmonary surface?

Answer 31

Right atrium

Question 32

What makes up the inferior surface?

Answer 32

Left ventricle and part of right ventricle

Question 33

What makes up the base of the heart?

Answer 33

Left atrium facing T6-T9

Question 34

What makes up the right border?

Answer 34

Right atrium

Question 35

What makes up the left border?

Answer 35

- Left ventricle | - part of left auricle

Question 36

What makes up the superior border?

Answer 36

Left and Right atria plus auricles

Question 37

What makes up the inferior border?

Answer 37

- Right Ventricle | - Part of Left Ventricle

Question 38

What does the coronary sulcus separate?

Answer 38

The atria from the ventricles

Question 39

What vein lies within the coronary sulcus?

Answer 39

Coronary Sinus

Question 40

What artery and vein lie withing the posterior interventricular sulcus?

Answer 40

Posterior Interventricular artery and Middle Cardiac vein

Question 41

What vein runs with the right marginal artery?

Answer 41

Small cardiac vein.

Question 42

What muscles are in the atrium?

Answer 42

Pectinate Muscles

Question 43

What does the foramen ovale become after birth and where is it located?

Answer 43

Fossa Ovale, right atrium

Question 44

Which valve lies in between the right atrium and right ventricle?

Answer 44

Tricuspid Valve

Question 45

Which valve lies between the left atrium and left ventricle?

Answer 45

Bicuspid (Mitral) Valve

Question 46

Which heart chamber pumps blood to the lungs?

Answer 46

Right Ventricle

Question 47

Which heart chamber receives blood from the lungs and through what blood vessels?

Answer 47

Left Atrium, pulmonary veins

Question 48

What muscles are in the ventricles?

Answer 48

Papillary Muscles

Question 49

The sinus venarum contains the openings of what blood vessels?

Answer 49

SVC, IVC, and Coronary Sinus

Question 50

Which heart chamber contains the conus arteriosus?

Answer 50

Right Ventricle

Question 51

The septomarginal trabeculae is also known as what?

Answer 51

Moderator Band