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Anatomy I EXAM 2 DDS UMKC > 6: Vasculature & Innervtion Of The Hear > Flashcards

6: Vasculature & Innervtion Of The Hear Flashcards

1
Q

What do the coronary arteries supply

A
  1. Myocardium

2. Epicardium (visceral layer)

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2
Q

Coronary arteries arise from

A

Aortic sinuses

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3
Q

Branches of the right coronary artery

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

Branches of the left coronary artery

A
  1. Circumflex
    1B. Marginal
  2. Anterior interventricular artery (Left Ant. Descending)
    2B. Diagonal
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5
Q

The coronary arteries are ______ end arteries

A

Functionally end arteries

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6
Q

What is an end artery or terminal artery

A

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

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7
Q

The right coronary artery supplies

A
  1. SA node
  2. Right atrium
  3. Right ventricle
  4. Posterior 1/3 of interventricular septu
  5. AV node
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8
Q

What does the left coronary artery supply

A
  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
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9
Q

The right coronary artery runs in the

A

Coronary sulcus

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10
Q

The Sinus Atrial SA nodal artery supplies

A

The sa node

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11
Q

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

A

Right ventricle, doesn’t reach the apex

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12
Q

what is Coronary artery Dominence

A

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

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13
Q

What is codominance for the coronary arteries

A

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

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14
Q

Coronary atherosclerosis

A

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

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15
Q

Treatment for coronary artery disease

A

Angioplasty, surgery, meds, life changes

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16
Q

What is an myocardial infarction

A

Occlusion of major artery

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17
Q

Myocardiac infarctions occur most commonly in which artery

A

Anterior interventricular artery - left anterior descending artery

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18
Q

The heart is drained mainly by veins that dump in to

A

The coronary sinus

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19
Q

Anterior cardiac veins drain directly into

A

The right atrium

20
Q

The coronary sinus runs towards

A

The right side of the heart of the posterior side

21
Q

The coronary drains into

A

The right atrium

22
Q

What are your cardiac veins

A
  1. Coronary
  2. Anterior cardiac
  3. Great cardiac
  4. Small cardiac
  5. Middle cardiac
23
Q

Where is the SA node located

A

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

24
Q

The SA node is located superior to what structure

A

Crista terminalis

25
Q

The purpose or function of the SA node

A

Initiates cardiac muscle contraction and determines heart rate

26
Q

What initiates cardiac muscle contraction

A

SA node

27
Q

What determines the heart rate

A

SA node

28
Q

Where is the AV node located

A

In the interatrial septum

29
Q

Where does the AV bundle pass

A

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

30
Q

What is the function of purkinje fibers

A

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

31
Q

What does contraction of the papillary muscle cause

A

Closes the AV valves for systole

32
Q

Preganglionic sympathetic neuron cell bodies for cardiac innervation are located

A

In the lateral horns of spinal cord T1-5

33
Q

Postganglionic cells of sympathetic cardiac innervation are located

A

In the cervical and superior thoracic paravetebral ganglia

34
Q

Postsynaptiic fibers of sympathetic cardiac innervation are carried in

A

Cardiopulmonary splanchnic nerves

35
Q

What is sympathetic innervation responsible for

A
  1. Increasing heart rate
  2. Impulse conduction
  3. Force of heart beat
  4. Blood flow in coronary arteries
36
Q

What is parasympathetic stimulation of cardiac innervation responsible for

A
  1. Decreasing heart rate
  2. Force of contraction
  3. Constricting company artery
37
Q

Visceral pain for the heart follow pathways

A

Backwards of the sympathetics

38
Q

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

A

Vagus nerve back

39
Q

How many umbilical arteries and veins

A

2 arteries, 1 vein

40
Q

2 umbilical arteries are branches of the

A

Internal iliac

41
Q

The 2 umbilical arteries carry

A

Unoxygenated blood AWAY from the fetus

42
Q

The 1 umbilical vein drains in to

A

Ductus venosus, wihich drains to the IVC

43
Q

The umbilical vein carries

A

Oxygenated blood from placenta to fetus

44
Q

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

A
  1. Flow in two right atrium, toward foramen ovale to left atrium.
  2. This supplies head neck and upper extremeities
45
Q

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

A
  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

Anatomy I EXAM 2 DDS UMKC (6 decks)

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