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Microbiology > Heart > Flashcards

Heart Flashcards

1
Q

Superior/ inferior venae cavae

A

It received oxygen poor blood from veins

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2
Q

Right/ left pulmonary arteries

A

Carry blood to the lungs where oxygen is picked up and co2 is unloaded.

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3
Q

Pulmonary veins

A

Blood is returned to

The left side of the heart through the veins.

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4
Q

Pulmonary circulation

A

From the right side of the heart to the lungs and back to the left side of the heart

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5
Q

Aorta

A

Blood returned to the left side of the heart is pumped out of the heart

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6
Q

Pericardium

A

The heart is enclosed by a double- walled sac.

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7
Q

Endocardium

A

Inner heart

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8
Q

Myocardium

A

Thick muscle

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9
Q

Pericardium

A

Surrounds the heart

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10
Q

Pericarditis

A

Infection of the outer heart

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11
Q

Intrinsic conduction system

A

That is built with in the heart tissue and sets the basic rhythm.

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12
Q

(SA) sink atrial node

A

The highest rate of depolerization in the whole system sets pace.

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13
Q

(AV) node

A

The junction of the atria and ventrivles😌

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14
Q

Heart block

A

Any damage to the SB mode can partially or totally release the ventricles from the SA node.

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15
Q

Ischemia

A

Lack of an adequate blood supply to the heart may lead to fibrillation a rapid suffering of the heart.

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16
Q

Tachycardia

A

Is rapid heart beats

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17
Q

Bradycardia

A

Heart rate that is substantially slower than normal.

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18
Q

Systole

A

Contraction of the heart

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19
Q

Mid to late diastole

A

Heart complete relaxation

Low pressure

AV valves are open

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20
Q

Ventricular systole

A

Intraventricular pressure in the ventricles is higher than the pressure in the arteries leaving the heart

Demi lunar valves and blood rushes out.

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21
Q

Lub

A

Is caused by the closing of the AB valves.

22
Q

Dub

A

Occurres when the semilunar valves close at the end of systole

23
Q

Infarction

A

Causing death to tissue typically from thrombus or embolus

24
Q

Valvalumar stenosis

A

Valve becomes stiff and becomes endocarditis causing it to contract more then normal

25
Pericarditis
Viral but is caused by streptococcus or mycobacterium
26
Disastol
Heart fills up
27
Systolic
Blood through the rest of the body
28
Intrinsic conduction system
Base to apex Power connected by intercellular disks Down and up
29
SA cells
Build up positive charge and start depolerization when they reach a thresh hold that triggers them to release ca2 and k makes muscles contract
30
Depolerization
Action potiental
31
Reset
The time it takes to reset the threshold sets how frequent your heart beats.
32
SA cells
Positive charge Na Depolerization triggers salts to rease ca and k Potassium out resets
33
P wave
Depolerization of a trail contractle fibers
34
PQ interval
Atrium firing and ventricles going off.
35
PQ spike
AV node depolerization because a lot of muscle firing different voltage.
36
T wave
Resetting and relaxing
37
T ventricles
Repolarize potassium coming back in
38
Atrial cells
Best about 60 times per minute
39
Ventricular cells
More slowly ( 20-40 min)
40
Purkinje fibers
Spread within the muscle of the ventricle walls.
41
Heart block
Any damage to the AV node can partially or totally release the ventricles from the control of AV node.
42
SA node damage
Slower heart rate
43
Finrilation
A rapid uncoordinated shuddering of the heart
44
Average heart beat
75 times per minute
45
Mid to late distole
Passively into and through the atria into the ventricles Semi lunar valves are closed AV valves are open Contract and force blood
46
Ventricle systole
Semi lunar forced open and blood rushes through AV valves close Altria relaxed and chambers fill with blood
47
Early diastole
Ventricles relax Semilunar snap shut
48
Factors of the heart
Neural controls Hormones and ions Physical factors
49
Epinephrine
Mimics the effects of the sympathetic nerves.
50
Heart rate - heat
Heat increases heart rate by boosting the metabolic rate of heart cells
51
Congestive heart failure
Pumping efficiency of heart is depressed
52
Pulmonary edema
Fluids leak as pressures build into the lung tissue

Microbiology (19 decks)

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