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z_A&P II: BIO426 > Heart Anatomy > Flashcards

Heart Anatomy Flashcards

Learn the external and internal anatomy of the heart. (98 cards)

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1
Q

ID: 1

A

Myocardium

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2
Q

ID: 2

A

Endocardium

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3
Q

ID: 3

A

Epicardium

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4
Q

ID: 4

A

Pericardial Sac

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5
Q

ID: 1

A

Left Ventricle

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6
Q

ID: 2

A

Interventricular Septum

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7
Q

ID: 3

A

Right Ventricle

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8
Q

Describe: 1

A

Deoxigenated blood enters right atrium from superior and inferior venae cavae.

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9
Q

Describe: 2

A

Blood in right atrium flows through right AV (Tricuspid) valve into right ventricle.

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10
Q

Describe: 3

A

Contraction of right ventricle forces pulmonary valve open

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11
Q

Describe: 4

A

Blood flows through the pulmonary valve into pulmonary trunk.

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12
Q

Describe: 5

A

Blood is distributed by right and left pulmonary arteries to lungs, where it unloads CO2 and loads O2.

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13
Q

Describe: 6

A

Oxygenated blood returns from lungs via pulmonary veins to left atrium.

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14
Q

Describe: 7

A

Blood in left atrium flows through left AV (bicuspid) valve into left ventricle.

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15
Q

Describe: 8

A

Contraction of left ventricle forces aortic valve open.

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16
Q

Describe: 9

A

Blood flows through the aortic valve into ascending aorta.

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17
Q

Describe: 10

A

Blood in aorta is distributed to every organ in the body, where it unloads O2 and loads CO2.

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18
Q

Describe: 11

A

Deoxygenated blood returns to right atrium via venae cave.

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19
Q

Give a simple 6 step description of blood flow.

A
  1. Blood enters the right atrium through vena cavae.
  2. Blood travels through tricuspid valve into right ventricle.
  3. Blood travels through pulmonary valve out to the lungs via the pulmonary arteries.
  4. Blood returns through pulmonary veins to left atrium.
  5. Blood passes through bicuspid valve to the left ventricle.
  6. Blood passes through the aortic valve to the aorta.
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20
Q

The two heart valves that are not connecting atria to ventricles are called the…

A

Aortic valve and Pulmonary valve

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21
Q

ID: 1

A

Aorta

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22
Q

ID: 2

A

Right pulumonary artery

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23
Q

ID: 3

A

Superior vena cava

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24
Q

ID: 4

A

Right pulumonary veins

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25
ID: 5
Interatrial septum
26
ID: 6
Right atrium
27
ID: 7
Right atrioventricular (AV) valve or tricuspid valve
28
ID: 8
Teindinous cords
29
ID: 9
Right ventricle
30
ID: 10
Inferior vena cava
31
ID: 11
Left pulmonary artery
32
ID: 12
Pulmonary trunk
33
ID: 13
Left pulmonary veins
34
ID: 14
Pulmonary valve
35
ID: 15
Left atrium
36
ID: 16
Aortic valve
37
ID: 17
Left atrioventricular (AV) valve or biscuspid valve
38
ID: 18
Left ventricle
39
ID: 19
Papillary muscle
40
ID: 20
Interventricular septum
41
ID: 21
Endocardium
42
ID: 22
Myocardium
43
ID: 23
Epicardium
44
ID: 1
Aortic arch
45
ID: 2
Superior vena cava
46
ID: 3
Right pulmonary artery
47
ID: 4
Right pulmonary veins
48
ID: 5
Right auricle
49
ID: 6
Right atrium
50
ID: 7
Coronary sulcus
51
ID: 8
Right ventricle
52
ID: 9
Inferior vena cava
53
ID: 10
Ligamentum arteriosum
54
ID: 11
Ascending aorta
55
ID: 12
Left pulmonary artery
56
ID: 13
Pulmonary trunk
57
ID: 14
Left pulmonary veins
58
ID: 15
Left auricle
59
ID: 16
Anterior interventricular sulcus
60
ID: 17
Left ventricle
61
ID: 18
Apex
62
ID: 1
Aorta
63
ID: 2
Left pulmonary artery
64
ID: 3
Left pulmonary veins
65
ID: 4
Left atrium
66
ID: 5
Coronary sulcus
67
ID: 6
Coronary sinus
68
ID: 7
Left ventricle
69
ID: 8
Apex
70
ID: 9
Superior vena cava
71
ID: 10
Right pulmonary artery
72
ID: 11
Right pulmonary veins
73
ID: 12
Right atrium
74
ID: 13
Inferior vena cava
75
ID: 14
Posterior interventricular sulcus
76
ID: 15
Right ventricle
77
The SA node is also known as the...
Sinoatrial node
78
The AV node is also known as the...
Atrioventricular node
79
The AV bundle is also known as the...
Atrioventricular bundle
80
The intrinsic conduction system is also known as the
cardiac conduction system
81
The intrinsic conduction system is responsible for regulating...
the heart beat
82
The ____ node is the pacemaker of the heart.
SA node
83
Describe the intrinsic conduction cycle
1. SA node in upper right atrium fires 2. Excitation flows through the atrial myocardium 3. AV node in lower right atrium fires 4. Excitation spreads down AV bundle 5. Subendocardial conducting network distributes excitation through ventricular myocardium
84
Define Systole
The contraction of the heart muscle
85
Define Diastole
The relaxation of the heart muscle
86
What are the four steps of the cardiac cycle?
1. Veintricular filling 2. Isovolumetric contraction 3. Ventricular ejection 4. Isovoumetric relaxation
87
Cardiac cycle: Explain Ventricle Filling
* Blood flows passively into atria * Atrial contraction (atrial systole) * AV valves open * Semilunar valves close * Ventricle is in diastole (relaxation) * Causes ventricles to fill with blood
88
Cardiac cycle: Explain Isometric Contraction
* No change in volume * creates high pressure * forces semilunar valves to open * blood leaves ventricle
89
Cardiac cycle: Explain Ventricle Ejection
* Ventricles contract * Close AV valves (1st sound of heart) * Atria in diastole
90
Cardiac cycle: Explain Isovolumetric Relaxation
* Blood leaves ventricle * Pressure drops * Semilunar valves close (2nd sound of heart) * Results in ventricular diastole (relaxation)
91
Cardiac Output: Measures the effectiveness of...
heart contractions
92
Define Cardiac Output
The amount of blood pumped out of the heart in 1 minute.
93
Define Heart Rate
The number of times the heart contracts in one minute.
94
Stroke Volume: Define EDV
End Diastolic Volume: Blood that is in the ventricle *before* contraction.
95
Stroke Volume: Define ESV
End Systolic Volume: Amount of blood left in heart *after* contraction.
96
Stroke Volume: What is Starling's "Law of the Heart"
SV=EDV-ESV
97
What two factors determine Cardiac Output?
Stroke Volume (SV) and Heart Rate (HR)
98
What is the formula for CO?
CO=(SV)(HR)

z_A&P II: BIO426 (31 decks)

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