Human Phys Heart

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73 Terms

1

tricuspid valve

prevents backflow of blood; sits between right atrium and ventricle

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2

pulmonary veins

collects blood returning to the heart from the lungs

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3

interventricular septum

wall located between right and let ventricles

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4

pulmonary trunk

pumps blood into the pulmonary artery

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5

aortic semilunar valve

prevents the backflow of blood; sits between the left ventricle and the aorta

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6

inferior vena cava

brings blood back to the heart from the lower parts of the body

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7

right atrium

chamber of the heart that receives deoxygenated blood from the body systems

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8

bicuspid valve

heart valve that prevents the backflow of blood into the left atrium

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9

aorta

the major artery exiting the left ventricle that carries oxygenated blood to the body

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10

pulminary artery

the artery that carries deoxygenated blood from the right ventricle to the lungs

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11

right ventricle

chamber of the heart that pumps blood to the lungs

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12

pulminary semilunar valve

heart valve that opens to allow blood to flow to the lungs

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13

pulminary veins

veins connected to the heart that return oxygenated blood to the left atrium

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14

apex

point on the inferior surface of the heart

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15

base

area at the superior surface of the heart where all of the large blood vessels are attached

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16

tricuspid valve

heart valve that opens to allow blood to flow into the right ventricle

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17

superior vena cava

vein that carries deoxygenated blood from the upper body to the heart

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18

chordae tendinae

fibrous cords that help to keep the valves closed during contraction.

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19

left ventricle

the chamber of the heart that receives oxygenated blood from the left atrium and pumps it into the aorta

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20

left atrium

the chamber of the heart that receives oxygenated blood from the pulmonary veins and passes it to the left ventricle

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21

AV node

hold signals so it can reach atrium before contraction

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22

purkinje fibers

tells ventricle to contract

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23

SA node

“pacemaker”, starts every beat, sends P wave

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24

AV bundle

gets signal to bottom of heart as fast as possible

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25

bundle branches

splits signal to reach both sides of the ventricles quickly.

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26

why do the purkiinje fibers start at the apex of the heart and then travel up the walls of the ventricles

the heart contracts bottom to top

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27

diastole

relaxed

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28

systole

contracts

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29

stages of heart beat

  1. mid to late diastole

  2. ventricular systole

  3. early diastile

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30

mid-to-late diastole

atria contracts

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31

ventricular systole

ventricles contracting

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32

early diastile

everything is relaxed

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33
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P wave

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34
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QRS complex

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35
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T wave

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36

P wave

atria depolarizes/contracts

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37

QRS complex

venticles depolarize/contract

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38

T wave

ventricles repolarize

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39
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PVC

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40

PVC

premature ventricle contraction

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41
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sinus tachycardia

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42

sinus tachycardia

resting heartbeat is too fast

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43
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sinus bradycardia

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44

sinus bradycardia

resting heartbeat is too slow

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45
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atrial flutter

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46

atrial flutter

atria contracts too often, QRS is normal

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47
term image

atrial fibrillation

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48

atria fibrillation

atrias contract too often, QRS not spaced evenly

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49
term image

ventricular fibbrillation

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50

ventricular fibrillation

ventricles are not contracting, most dangerous

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51

myocardial infarct

death of heart tissue due to heart attack

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52

full thickness infarct

vessell that’s blocked gives blocks lots of blood

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53

partial thickness infarct

vessell that’s blocked blocks off little blood

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54

15 minutes into heart attack

dizziness

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55

20 minutes into heart attack

500 heart cells die/sec

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56

what pain do you feel when having a heart attack

indegestion, arm pain, jaw pain

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57
<p>1</p>

1

aorta

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58
<p>2</p>

2

pulminary trunk/arteries

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59
<p>3 (poking out)</p>

3 (poking out)

pulminary veins

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60
<p>4 (top to bottom)</p>

4 (top to bottom)

right atrium, tricuspid valve, chordae tendinae, right ventricle

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61
<p>5</p>

5

apex and interventricular septum

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62
<p>3 (big area) (top to bottom)</p>

3 (big area) (top to bottom)

left atrium, bicuspid valve, chordae tendinae, left ventricle

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63

path of deoxygenated blood from body

into heart from superior/inferior vena cava, into right atrium, through tricuspid valve, into right ventricle, opens pulmonary semilunar valve, to the lungs through pulmonary arteries, oxygenated, back to heart through pulmonary veins, through bicuspid valve, into left ventricle, opens aortic semilunar valve, through aorta out the heart

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64

chambers of heart

right/left atrium and ventricles

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65

valves of heart

tricuspid and bicuspid valves, aortic semilunar valve, pulmonary semilunar valve

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66

vessels of heart

inferior/superior vena cava, aorta, pulmonary arteries/veins

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67

veins

carry blood to heart

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68

arteries

carry blood away from heart

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69
<p>1</p>

1

SA node

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70
<p>2</p>

2

Av node

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71
<p>3</p>

3

bundle branches

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72
<p>7</p>

7

purkinje fibers

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73
<p>6</p>

6

AV bundle

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