6: Vasculature & Innervtion Of The Hear

Question 1

What do the coronary arteries supply

Answer 1

1. Myocardium

2. Epicardium (visceral layer)

Question 2

Coronary arteries arise from

Answer 2

Aortic sinuses

Question 3

Branches of the right coronary artery

Answer 3

1. SA nodal
2. Marginal
3. Posterior interventricular (Post. Desc. Art)
4. Av nodal

Question 4

Branches of the left coronary artery

Answer 4

1. Circumflex
   1B. Marginal
2. Anterior interventricular artery (Left Ant. Descending)
   2B. Diagonal

Question 5

The coronary arteries are ______ end arteries

Answer 5

Functionally end arteries

Question 6

What is an end artery or terminal artery

Answer 6

An artery that is the only supply of oxygenated blood to a portion of tissue

Question 7

The right coronary artery supplies

Answer 7

1. SA node
2. Right atrium
3. Right ventricle
4. Posterior 1/3 of interventricular septu
5. AV node

Question 8

What does the left coronary artery supply

Answer 8

1. Left atrium
2. Left ventricle
3. Portion of right ventricle
4. Interventricular septum (ant. 2/3)
5. AV node
   * can do the SA node in some people

Question 9

The right coronary artery runs in the

Answer 9

Coronary sulcus

Question 10

The Sinus Atrial SA nodal artery supplies

Answer 10

The sa node

Question 11

The right marginal artery supplies ___ and doesn’t reach the _____

Answer 11

Right ventricle, doesn’t reach the apex

Question 12

what is Coronary artery Dominence

Answer 12

Defined by the anterior that gives rise to the posterior interventricular artery. Mainly right

Question 13

What is codominance for the coronary arteries

Answer 13

Right and left give rise to branches of the Posterior interventricular artery

Question 14

Coronary atherosclerosis

Answer 14

Lipid deposit in the tunica intima (lining) of coronary arteries

Question 15

Treatment for coronary artery disease

Answer 15

Angioplasty, surgery, meds, life changes

Question 16

What is an myocardial infarction

Answer 16

Occlusion of major artery

Question 17

Myocardiac infarctions occur most commonly in which artery

Answer 17

Anterior interventricular artery - left anterior descending artery

Question 18

The heart is drained mainly by veins that dump in to

Answer 18

The coronary sinus

Question 19

Anterior cardiac veins drain directly into

Answer 19

The right atrium

Question 20

The coronary sinus runs towards

Answer 20

The right side of the heart of the posterior side

Question 21

The coronary drains into

Answer 21

The right atrium

Question 22

What are your cardiac veins

Answer 22

1. Coronary
2. Anterior cardiac
3. Great cardiac
4. Small cardiac
5. Middle cardiac

Question 23

Where is the SA node located

Answer 23

In the wall of the right atrium near the opening of the superior vena cava.

Question 24

The SA node is located superior to what structure

Answer 24

Crista terminalis

Question 25

The purpose or function of the SA node

Answer 25

Initiates cardiac muscle contraction and determines heart rate

Question 26

What initiates cardiac muscle contraction

Answer 26

SA node

Question 27

What determines the heart rate

Answer 27

SA node

Question 28

Where is the AV node located

Answer 28

In the interatrial septum

Question 29

Where does the AV bundle pass

Answer 29

From AV node to membranous part of interventricular septum then branches eventually to purkinje fibers

Question 30

What is the function of purkinje fibers

Answer 30

Carry signal into the papillary muscle to coordinate thei contraction will systole

Question 31

What does contraction of the papillary muscle cause

Answer 31

Closes the AV valves for systole

Question 32

Preganglionic sympathetic neuron cell bodies for cardiac innervation are located

Answer 32

In the lateral horns of spinal cord T1-5

Question 33

Postganglionic cells of sympathetic cardiac innervation are located

Answer 33

In the cervical and superior thoracic paravetebral ganglia

Question 34

Postsynaptiic fibers of sympathetic cardiac innervation are carried in

Answer 34

Cardiopulmonary splanchnic nerves

Question 35

What is sympathetic innervation responsible for

Answer 35

1. Increasing heart rate 2. Impulse conduction 3. Force of heart beat 4. Blood flow in coronary arteries

Question 36

What is parasympathetic stimulation of cardiac innervation responsible for

Answer 36

1. Decreasing heart rate 2. Force of contraction 3. Constricting company artery

Question 37

Visceral pain for the heart follow pathways

Answer 37

Backwards of the sympathetics

Question 38

Visceral sensory pathways that lower blood pressure/slow the heart rate follow

Answer 38

Vagus nerve back

Question 39

How many umbilical arteries and veins

Answer 39

2 arteries, 1 vein

Question 40

2 umbilical arteries are branches of the

Answer 40

Internal iliac

Question 41

The 2 umbilical arteries carry

Answer 41

Unoxygenated blood AWAY from the fetus

Question 42

The 1 umbilical vein drains in to

Answer 42

Ductus venosus, wihich drains to the IVC

Question 43

The umbilical vein carries

Answer 43

Oxygenated blood from placenta to fetus

Question 44

Fetal blood from inferior vena cava will flow where and supply hat

Answer 44

1. Flow in two right atrium, toward foramen ovale to left atrium. 2. This supplies head neck and upper extremeities

Question 45

Fetal blood from superior vena cava will flow where and supply what

Answer 45

1. Flow into right atrium toward tricuspid valve to right ventricle to pulmonary trunk but then shunted in to aorta through ductus arteriosus. 2. Supplies thorax, abdomen, pelvis, lower extremities