Cardio Exam 1 > Heart Anatomy > Flashcards

Heart Anatomy Flashcards

(46 cards)

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1
Q

pericardium encloses

A
  • heart and roots of great vessels
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2
Q

external sac of pericardium

A
  • fibrous pericardium
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3
Q

internal sac of pericardium

A
  • serous pericardium
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4
Q

fibrous pericardium composed of

A
  • tough connective tissue
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5
Q

fibrous pericardium continuous with

A
  • adventitia of great vessels
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6
Q

fibrous pericardium attached to

A
  • central tendon of diaphragm as well as sternum
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7
Q

fibrous pericardium supplied by

A
  • internal thoracic (pericardiacophrenic and muscuophrenic) and inferior phrenic arteries
  • as well as aorta
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8
Q

pain in fibrous pericardium conveyed by

A
  • general sensory fibers of phrenic nerve
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9
Q

parietal layer of serous pericardium lines

A
  • inner surface of fibrous pericardium
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10
Q

visceral layer of pericardium called

A
  • epicardium
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11
Q

visceral layer of pericardium adheres

A
  • adheres to heart and forms outer covering
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12
Q

the parietal and serous layers are continuous with

A
  • one another around the large arteries and around the large veins
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13
Q

coronary sulcus

A
  • atrioventricular sulcus

- encircles heart dividing atria from ventricles

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14
Q

anterior and posterior inter ventricular sulci

A
  • separate two ventricles
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15
Q

right border of the heart

A
  • right atrium
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16
Q

left border of the heart

A
  • left auricle

- left ventricle

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17
Q

anterior surface of heart

A
  • right ventricle
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18
Q

posterior surface of heart

A
  • left atrium

- in the back and out of view

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19
Q

transverse pericardial sinus separates

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A
  • arteries from veins
20
Q

oblique pericardial sinus formed by

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A
  • reflection into pulmonary arteries of the heart
21
Q

right coronary artery divided into

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A
  • branch to SA node - superior
  • marginal branch
  • PDA - posterior descending artery - posterior surface
22
Q

left coronary artery divided into

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A
  • LAD - left anterior descending
  • circumflex branch - bends around back of heart
  • marginal branch
23
Q

what percent of people have a right dominant coronary circulation

where does PDA arise from

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A
  • 85% of people

- Right coronary artery

24
Q

what percent of people have a left-dominant coronary circulation

  • where does PDA arise from
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A
  • 8% of people

- left circumflex

25
what percent of people have a codominant circulation? - where does PDA arise from
- 7% of people | - left circumflex and right coronary artery
26
left ventricle compared to right ventricle
- thicker wall
27
tricuspid valve found between
- right atrium and right ventricle
28
cusps of tricuspid valve
- anterior - septal - posterior
29
pulmonary valve found between
- right ventricle and pulmonary artery
30
mitral valve found between
- left atrium and left ventricle
31
cusps of mitral valve
- anterior | - posterior
32
aortic valve found between
- left ventricle | - aorta
33
lub sound
- first sound (S1) - systole - from mitral and tricuspid
34
the dub sound
- second sound (s2) - diastole - closing of two semilunar valves
35
pulmonary valve heard
- left 2nd intercostal space lateral to sternum
36
tricuspid valve heard
- lower part of sternum
37
aortic valve heard
- right intercostal space lateral to sternum
38
mitral valve heard
- left 5th intercostal space away from sternum
39
which node is the pacemaker
- SA node
40
heart rate of modified by the
- autonomic nervous system
41
cardiac plexus is a collection of
- sympathetic and parasympathetic nerves
42
cardiac plexus located at
- bifurcation of trachea just superior to heart
43
cardiac plexus modifies
- heart rate - force of contraction - cardiac output
44
what fibers raise/lower heart rate and force of contraction
- visceral motor fibers
45
what fibers convey cardiac pain signal what do they parallel
- visceral sensory fibers | - parallel sympathetic visceral motor fibers
46
what fibers transmit cardiac reflexes what do they parallel
- visceral sensory | - parallel parasympathetic visceral motor fibers
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