The Heart

What are the two functions of the heart?

Pulmonary & Systemic circuit

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The right side is the _ circuit

Pulmonary

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The left side is the _ circuit

Systemic

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What are the two primary layers of the pericardium?

Fibrous and serous

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Epicardium is the _ layer of the serous pericardium

Visceral

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The _ consists of _ muscle and is arranged in _ patterns

Myocardium, cardiac, circular

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The endocardium lines the:

Internal walls of the heart

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The right atrium receives oxy-poor (deoxy) blood from which 3 vessels?

Superior vena cava, Inferior vena cava, coronary sinus

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What are the 3 internal walls of the left and right ventricle?

Trabeculae carnaeae, papillary muscles, chordae tendineae

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What are the 4 functions of the cardiac skeleton?

1. Anchors valve cusps 2. Prevents overdilation of valve openings 3. Main point of insertion for cardiac muscles 4. Blocks direct spread of electrical impulse

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The "lub" sound is the _ and _ valves closing

Tricuspid and bicuspid

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The "dup" sound is the _ and _ valves closing

Pulmonary and aortic

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Systole is the _ of the heart chamber

Contraction

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Diastole is the _ of the heart chamber

Expansion

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Which circuit is longer and offers greater resistance to blood flow?

Systemic

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The _ ventricle is 3 times thicker than the _ ventricle

Left, right

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The coronary arteries supply blood to the:

Muscular walls of the heart

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The Heart

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