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Z-Anatomy 2 > Week 2 > Flashcards

Week 2 Flashcards

1
Q

Which system of the heart contracts the ventricles? (electrical impulse)

A

Purkinge fibers

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2
Q

Which valves are the semilunar valves?

A
  1. aortic valves

2. pulmonary valve

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3
Q

Where is the SA node located?

A

right atrium

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4
Q

What node sets the heart rate?

A

SA node

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5
Q

Is systole contraction or relaxation?

A

contraction

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6
Q

Is diastole contraction or relaxation?

A

relaxation

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7
Q

Coronary arteries branch off into the _____

A

aorta

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8
Q

What part of the heart drains deoxygenated blood to the right atrium?

A

coronary sinus (this is a vein not actually a sinus)

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9
Q

Do the valves flow one way or two ways?

A

one way

-ie the Mitra valve should just flow one way but that gets messed up with things like a mitravalve prolapse

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10
Q

Which side of the heart is thicker the left or the right?

A

Left ventricle (pumps blood to the whole body)

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11
Q

What does the fibrous skeleton do?

A

support valves and muscle cells

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12
Q

What does the fibrous skeleton do?

A

support valves and muscle cells

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13
Q

The AV valves (mitral valve and tricuspid valve) prevents back flow from the ________

A

ventricles into the atrium

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14
Q

The semilunar valves (pulmonary valve and aortic valve) prevent blood flow from ______

A

outflow vessels (aorta and pulmonary artery) back into the ventricles

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15
Q

What do the coronary arteries do?

A

provide oxygen and nutrients to the myocardium

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16
Q

What are the two types of cardiac cells the heartbeat needs?

A
  1. contractive cells (create the pumping)

1. conduction system cells (generate and spread the action potential)

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17
Q

The ______ system initiates and spread electrical impulses in the heart?

A

conducting system

18
Q

What are the two types of cells in the conducting system?

A
  1. nodal cells- pacemaker cells that set the heart rate

2. conducting cells- send stimuli to myocardium

19
Q

is stroke volume or cardiac output higher?

A

cardiac output (because it looks at 1 minute versus one beat_

20
Q

stroke volume

A

amount of blood pumped in a single beat

21
Q

cardiac output

A

amount of blood pumped each minute

22
Q

does acetylcholine increase or decrease heart rate

A

decrees heart rate (parasympathetic)

23
Q

does norepinephrine increase or decrease heart rate

A

increase

24
Q

what part of the brain controls the heart

A

the medulla in the brain stem

25
Q

The P in a EKGwave represents?

A

atrial depolarization (contraction)

26
Q

The QRS complex in a EKGwave represents?

A

ventricle depolarization (contraction)

27
Q

The T in a EKGwave represents?

A

ventricle repolorizatioj (relaxing)

28
Q

if CO2 in the body goes high will the heart rate increase or decrease?

A

increase because the heart is trying to balance out and get more oxygen into the body

29
Q

what does the sympathetic nervous system do

A

increase heart rate, stroke volume, and blood pressure

30
Q

what does parasympathetic system do?

A

decreases heart rate, stroke volume, and blood pressure

31
Q

Exchange between cells and blood takes place in the _________

A

capillaries

32
Q

The right atrium receives ____

A

receives systemic blood

33
Q

The left atrium receives ____

A

receives blood from the lungs

34
Q

The right ventricle pumps ____

A

pumps blood to the lungs

35
Q

The left ventricle pumps ____

A

pumps systemic blood

36
Q

What do arteries do?

A

-carry blood away from the heart

37
Q

Where do arteries carry blood to?

A

cappilaries

38
Q

Veins receive blood from the __________-

A

cappilaries

39
Q

Veins carry blood back to the _________

A

heart

40
Q

The coronary sinus drain deoxygenated blood into the ______________

A

right atrium

Z-Anatomy 2 (7 decks)

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