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Anatomy > Ch. 22: Heart > Flashcards

Ch. 22: Heart Flashcards

1
Q

Right pump- side of heart

Lungs-pulmonary v. to heart

A

Pulmonary circuit

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2
Q

Left side of heart

O2 deliver to cells to right heart

A

Systemic circuit

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3
Q

Name the four heart tissues

A

Pericardium
Epicardium
Myocardium
Endocardium

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4
Q

Serous membrane- dense irregular fibrous-sac, anchors heart, pericaridal cavity

A

Pericardium

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5
Q

visceral pericardium, heart surface

A

epicardium

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6
Q

heart muscle, multiple interlocking layers of cardiac muscle cells, intercalated discs= desmosomes+gap junctions (2 separate electrical units)

A

Myocardium

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7
Q

simple squamous, white sheet like lining

A

endocardium

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8
Q

What are the 2 separate electrical units of the myocardium?

A

atrial and ventricular units

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9
Q

What chamber receives oxygen-poor blood from the systemic circuit?

A

Right Atrium

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10
Q

Name the three veins that helps a chamber receive oxygen-poor blood from the systemic circuit

A

Superior Vena Cava
Inferior Vena Cava
Coronary Sinus

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11
Q

Vein opening from heart muscle is?

A

Coronary sinus

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12
Q

Foramen ovale during fetal development (48 hr seal)

A Depression

A

Fossa Ovalis

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13
Q

Open-blood flows into ventricle

Closed- ventricles going into systole

A

Tricuspid Valve

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14
Q

Chamber receives blood from right atrium and pumps it to lungs

A

Right Ventricle

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15
Q

L and R pulmonary Artery is attached (blue)

A

Pulmonary Trunk

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16
Q

Open to allow blood up, close so blood doesnt come back down

A

Pulmonary semilunar valve

17
Q

L and R ventricle-irregular muscle folds or ridges on ventricle walls

A

Trabeculae carneae

18
Q

Chamber that Receives oxygen-rich blood from lungs

A

Left atrium

19
Q

Red, O2 int L. Atrium

A

Pulmonary veins

20
Q

Chamber that pumps oxygenated blood into the body (Systemic circuit)

A

Left Ventricle

21
Q

What are the two heart valves and what is their function(s)?

A

Tricuspid (R. atrioventricular) valve and Bicuspid (L. atrioventricular or mitral) valve

-prevent backflow of blood into the atria when ventricle contracts

22
Q

collagen fibers that are stretchy strings on the heart

A

chordae tendineae

23
Q

cone-shapped, anchoring chordae tendineae

A

Papillary Muscle

24
Q

Open to allow blood out of ventricles, close cannot flow backward

A

Aortic semilunar valve and pulmonary semilunar valves

25
Q

Cardiac cycle

A

1 heart beat every .8 seconds
systole- wringing and emptying
diastole- relaxing and filling

26
Q

Conducting system (autorhythmic-elecrical signal)

A 
SA node
AV Node
Bundle of His
Through fibrous skeleton 
L and R bundle branches
Perkinje fibers 
Ventricular myocardium
27
Q

Coronary Circulation

A

heart’s blood vessels

Anatomy (11 decks)

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