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Bio 212 Exam 3 > Lecture 3 The Heart > Flashcards

Lecture 3 The Heart Flashcards

1
Q

Stationary blood would exhaust ___ and _____ quickly

A

oxygen and nutrient supply

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2
Q

Saturated blood would become saturated with ____ quickly

A

waste

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3
Q

A ________ allows blood to move throughout the body.

A

pumping heart

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4
Q

The heart beats approx. ____liters/min (resting) to approx. ____liters/min (exercise)

A

5;30

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5
Q

The heart pumps blood through a _____ system

A

closed

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6
Q

The right side of the heart carries _______ blood

A

deoxygenated

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7
Q

The left side of the heart carries ____ blood

A

oxygenated

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8
Q

What is the general size of the average heart?

A

Approx. 5.5”x3.5” (size of your fist)

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9
Q

Where is the heart located?

A

In the mediastinum region w/in the pericardial cavity, and lays on the diaphragm

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10
Q

The heart’s apex points _____, and the right chambers are slightly ______

A

left; anterior

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11
Q

The ___ of the heart is located on the superior border, between atria and great vessels, and is deep to the 3rd rib

A

BASE

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12
Q

The ___ of the heart is located at the “point” of the heart, a part of the left ventricle, and deep to the 5th intercostal space

A

APEX

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13
Q

The pericardium is filled with ____ fluid. How much?

A

Pericardial fluid. 10-20ml

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14
Q

This component of the heart consists of bands of fibro-elastic connective tissue interwoven with the myocardium.

A

Fibrous Skeleton of the Heart

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15
Q

What are the 4 functions of the fibrous skeleton of the heart?

A

shapes chambers, prevents overfilling, electrically separates atria from the ventricles, forms a frame for the valves

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16
Q

What is the name for the receiving chambers of the heart?

A

The 2 Atria

17
Q

Are the atria thin or thick walled?

A

Thin walled (only has to pump to the lungs)

18
Q

The left atrium ______

A

receives oxygenated blood from the LUNGS

19
Q

The right atrium ______

A

receives de-oxygenated blood from the BODY

20
Q

The pacemaker cells (aka ___&____ nodes) are located in the _____ _____ _____

A

SA and AV nodes; right atrial wall

21
Q

What is the name for the pumping chambers of the heart?

A

Ventricles

22
Q

Are the ventricles thin or thick walled?

A

Thick

23
Q

The ventricles are split by a ____ and have ____ muslces

A

septum; papillary muscles

24
Q

The right ventricle ______

A

pumps de-oxygenated blood to the lungs

25
Q

The left ventricle ____

A

pumps oxygenated blood to the body

26
Q

Which ventricle has the thickest wall? Why?

A

Left; needs to pump to the whole body

27
Q

The _____ & _____ carry de-oxygenated blood from the body tissues to the right atrium

A

Superior and Inferior Venae Cavae

28
Q

The ______ carries de-oxygenated blood fro the right ventricles to the lungs

A

Pulmonary Artery

29
Q

The ______ carry oxygenated blood from the lungs to the left atrium

A

Pulmonary veins

30
Q

The ___ carries oxygenated blood from the left ventricle to the body

A

Aorta

31
Q

Which heart valve exists between the right atria and ventricle?

A

Tricuspid (Right AV Valve)

32
Q

Which heart valve exists between the left atria and ventricle?

A

Bicuspid/Mitral (Left AV Valve)

33
Q

The “heart strings” of the heart are the ______

A

chordae tendinae

34
Q

Which heart valve exists between the right ventricle and the pulmonary artery?

A

Pulmonary Semilunar Valve

35
Q

Which heart valve exists between the left ventricle and the aorta?

A

Aortic Semilunar Valve

36
Q

What does AV and SV stand for

A

Atrioventricular Valve; Semilunar Valve

37
Q

The medical name for a heart attack is a ____ ____

A

myocardial infarction

38
Q

Myocardial Infarction leads to death of ______ due to insufficient _______; therefore the tissues degenerates and becomes nonfunctional (infarct)

A

heart tissue; insufficient blood supply

Bio 212 Exam 3 (5 decks)

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