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Anatomy And Phsiology > Neyland Actual 16/17 Functions+ Heart Test 3 > Flashcards

Neyland Actual 16/17 Functions+ Heart Test 3 Flashcards

(59 cards)

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1
Q

Inner lining of heart has valves

A

Endocardium

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2
Q

Thicjest layer of heart has actin myosin

A

Myocardium

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3
Q

Thin outer layer heart

A

Epicardium

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4
Q

Holds heart innpkace is a sling

A

Pericardium

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5
Q

Heart has how much more mitochondria than skeletal muscle

A

25

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6
Q

Descr8be r side pump action 9f heart

A 
Sup v c 
R atrium
Tricuspid
R ventricle 
Pulmonic senilunar valve 
Pulmonary artery to 
Lungs to
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7
Q

Describe l heart pump action

A 
Lungs
Pulmonary veins 
L atrium
Bicuspid or mitral
L ventricle 
Semilunar aortic valve 
Aorta 
To rest of the body
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8
Q

Where does all oxygenated blood originate

A

Aorta

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9
Q

What keeps the valves from flopping back up? Attached to bicuspid and mitral calves

A

Chirdae tendinae

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10
Q

Walls you need to know about and how many?

A

Aka septum
Interventricukar septum
Interatrial septum

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11
Q

List the atrioventrricular valves

A

Tricuspid bicuspid

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12
Q

List the semikunar valves

A

Pulmonic

Aortic

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13
Q

What action does the s1 sound indicate? Lub

A

Closing atrioventricular valves

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14
Q

What action does the s1 sound indicate? Lub

A

Closing atrioventricular valves

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15
Q

What does the dub s2 sound indicate?

A

Closure of the semilunar valves

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16
Q

What drains unoxygenated blood to the lungs from heart

A

Coronary veins

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17
Q

What is another term for narrowing

A

Stenosis

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18
Q

What supplies the myocardium with oxygen and nutrients? Fills during diastole when ventrickes at rest

A

Coronary arteries

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19
Q

What # diastolic range would be dangerous and show not perfusing the heart properly

A

60

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20
Q

What are the right and left coronary arteries called

A

Circumflex

Left anterior

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21
Q

Why would you. see troponin cck ast or ldh labs elevated in blood? What is happening/ has happened

A

Cardiac enzymes have leaked into blood when myocardial cells dead. Mi

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22
Q

Another name for lack of oxygen

A

Ischemia

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23
Q

Another name for death of tisssue

A

Infarction

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24
Q

Wire mesh built into catheter with balloon. Is inflated to push plaque against vessel wallsso there is flow

25
Surgical intervention arteries from aorta to coronary arteries/ helps move past blockages/damage
Bypass
26
List cardiac conduction system steps
``` Sa node (r atrium) Conducting fibers(atria contracts) Av node ( Bundle of his Left and right bundle branch Purkinjie fibers ```
27
What 2 things make conduction of heart?
Automaticity( generates own electrical signal) | Rhythm (goes in cycle)
28
What is the bodys pacemaker?
Sa node
29
What rate should sa node be generating
60-100
30
What rate should av node be conducting
40-60
31
What rate should bundle of his be conducting
30
32
What rate ahould purkinjie fibers be conducting
15
33
What does the p wave on an ekg represent
``` Atrial depolarization( atria contraction) aka firing This electrical signal makes the atria squeeze/contract/discharge/movement Durings systole ```
34
What does qrs complex on an ekg represent?
Atrial repolarization(na+ out of cell k in the cell) Ventricles filling Resetting During diastole
35
Ekg rhythm represent when electrical components of heart dont align with the muscle. Electricity there but the heart muscle is dead
Pea pulseless electrical activity
36
Respresents extra spikes on an ekg reading Implemented under skin Great for randomn ekectrical signal reset
Pacemaker
37
List steps of a cardiac cycle
Atrial systole Ventricular systole- Vebtricular diastole-
38
Nervous system innervation-which systen innervates the sa node ( and shortens time of the av node) this makes everything faster. So u can run if needed
Sympathetic/ fight or flight Aka Andrenergic
39
Netvouss system innervation Which system comes from the vagus nerve ? Lowers tge sa node heart rate Increases delay at av node
Parasympathitic aka cholinergic
40
Does the sa node innervate the ventricles?
No! You dont want these getting any slower
41
The sympathetic increases sa node activity and heart rate
True
42
The sympathetic system increases soeed of the cardiac impulse through conduction system
True
43
Parasympathetic system slows av delay
True
44
Parasympathetic system has no effect on the strength of contraction
True
45
The amount of blood the heart beats per minute
Cardiac output
46
What is nornal cardiac output
5-8 litres
47
What is formula for cardiac output
Co=HR x SV
48
What is the amount of blood the heart beats in a single beat
Stroke volume SV
49
Heart rate is the #times heart beats per min caused by sa node firing
True
50
Cardiac output can be increased to 4-5 times the resting output( up to 25 litres per min)
True from the cardiac reserve
51
The heart rate going up is a comoe satory mechanism and u shoukd be worried
True
52
Explain starlings law of heart
The more you stretch the ventricles during diastole the stronger the contraction
53
Starlings law how does it change the force of the contraction
By stretching the myocardium
54
E xplain inotropic effect
Caused by drugs- increases force of contraction without stretching the myocardium. No fluid increase necessary . Ex digoxin- when heart faiking pt cant handle fluids. This is independent of the statling law
55
Sequence of events that occurs during 1 heartbeat
Cardiac cycle
56
Average resting stroke volume
60 to 80 ml per beat
57
If ventricles can be made to co tract more forcefully, a greater percentage of blood can be pumped per beat
True
58
What 2 ways can stroke volume be altered
Starlings law | Inotropic
59
End diastolic volume and preload are the same
True- amt blood in vebtricles at end of diastole

Anatomy And Phsiology (5 decks)

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