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Anatomy 4 > Study Guide 3 > Flashcards

Study Guide 3 Flashcards

1
Q

pace maker of the heart

A

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2
Q

length of the cardiac cycle at 72 beats/minute

A

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3
Q

indicates the depolarization of the atria

A

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4
Q

a recording of the electrical activity of the heart

A

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5
Q

indicates depolarization of the ventricles on ECG

A

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6
Q

contraction phase of the ventricles

A

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7
Q

carry impulses to myocardium

A

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8
Q

relaxation phase of the ventricles

A

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9
Q

distributes excitation to the ventricules

A

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10
Q

cells that can initiate excitation

A

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11
Q

SA node is located

A

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12
Q

located in between atriums and ventricles

A

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13
Q

heart muscle is none responsive to a stimuli

A

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14
Q

when frequency of stimulation is increased

A

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15
Q

contraction in any of the chambers

A

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16
Q

relaxation in any of the chambers

A

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17
Q

Does the phrase refer to ventricular systole or ventricular diastole?
atria are in systole

A

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18
Q

Does the phrase refer to ventricular systole or ventricular diastole?
atrioventricular valves are open

A

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19
Q

Does the phrase refer to ventricular systole or ventricular diastole?
atrioventricular valves are closed

A

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20
Q

Does the phrase refer to ventricular systole or ventricular diastole?
semilunar valves are open

A

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21
Q

Does the phrase refer to ventricular systole or ventricular diastole?
blood is ejected from the heart

A

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22
Q

Does the phrase refer to ventricular systole or ventricular diastole?
pressure in ventricles decreases

A

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23
Q

Does the phrase refer to ventricular systole or ventricular diastole?
blood enters the ventricles

A

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24
Q

Please give in order cycles of the cardiac cycle starting from isovolumetric relaxation

A

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25
Q

T/F: Cardiac output equals rate plus stroke volume.

A

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26
Q

T/F: Stroke volume is the amount of blood ejected from the heart during each minute.

A

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27
Q

T/F: Contractile strength of the heart muscle can have an effect on the stroke volume.

A

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28
Q

T/F: increased venous return decreases contraction strength.

A

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29
Q

T/F: heart rate will not have any effect on the stroke volume.

A

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30
Q

Please list differences between skeletal muscle and cardiac muscle look up variations in their histology to physiology?

A

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31
Q

This type of contraction muscle that is generating force is lengthening ?

a) Eccentric
b) Concentric
c) Isometric

A

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32
Q

This type of muscle fiber is fatigue resistant and has the highest myoglobin content.

a) Fast twitch fibers
b) Slow oxidative
c) Fast oxidative

A

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Anatomy 4 (11 decks)

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