Lecture 37 - Heart, Pericardium, and Great Vessels

Question 1

two main arteries of the coronary circulation

Answer 1

right and left coronary arteries

Question 2

the right and left coronary arteries arise from the

Answer 2

ascending aorta

Question 3

the left coronary artery branches into two main divisions:

Answer 3

circumflex artery and the anterior descending artery

Question 4

the right coronary artery gives off the

Answer 4

posterior descending artery

Question 5

the coronary arteries fill during which stage of the cardiac cycle

Answer 5

resting (diastolic)

Question 6

the coronary arteries emerge from the ascending aorta ___ to the aortic valves

Answer 6

distal

Question 7

venous drainage of the myocardium is via the

Answer 7

great cardiac vein, middle cardiac vein, small cardiac veins, anterior cardiac veins, oblique vein, and the coronary sinus

Question 8

the coronary sinus drains into the

Answer 8

right atrium

Question 9

layers of the pericardium

Answer 9

visceral layer, parietal layer, fibrous pericardium

Question 10

layer of the serous pericardium, immediately surrounds the heart

Answer 10

visceral layer

Question 11

layer of the serous pericardium, forms the internal portion of the external layer

Answer 11

parietal layer

Question 12

the external portion of the external layer of the pericardium

Answer 12

fibrous pericardium

Question 13

between the parietal layer and visceral pericardium

Answer 13

pericardial space

Question 14

the cardiac plexus lies over the

Answer 14

tracheal bifurcation

Question 15

parasympathetic innervation is via the

Answer 15

vagus nerve

Question 16

parasympathetic functions of the vagus nerve

Answer 16

slows the heart rate (bradycardia) and reduces the force of myocardial contraction

Question 17

sympathetic innervation is via

Answer 17

fibers from upper 4-5 thoracic segments

Question 18

sympathetic functions

Answer 18

increases heart rate (tachycardia) and increases the force of myocardial contraction

Question 19

the right and left brachiocephalic veins converge to form the

Answer 19

superior vena cava

Question 20

return venous blood from the head, neck, and upper limbs to the heart

Answer 20

brachiocephalic veins

Question 21

the brachiocephalic artery divides to form the

Answer 21

right subclavian and right common carotid arteries

Question 22

vessels that carry arterial blood to the right upper limb and right side of head/neck

Answer 22

brachiocephalic artery

Question 23

carries arterial blood to the left head/neck

Answer 23

left common carotid artery

Question 24

carries arterial blood to the left upper limb

Answer 24

left subclavian artery

Question 25

vestigial structure of the aortic arch

Answer 25

ligamentum arteriosum

Question 26

the ligamentum arteriosum is a remnant of the

Answer 26

embryological ductus arteriosus

Question 27

the ligamentum arteriosum joins the aortic arch with the

Answer 27

pulmonary trunk

Question 28

winds around the aortic arch and is closely applied to the ligamentum arteriosum

Answer 28

left recurrent laryngeal nerve