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Microbiology > Heart > Flashcards

Heart Flashcards

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Biology 101 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
Q

Pericarditis

A

Viral but is caused by streptococcus or mycobacterium

26
Q

Disastol

A

Heart fills up

27
Q

Systolic

A

Blood through the rest of the body

28
Q

Intrinsic conduction system

A

Base to apex

Power connected by intercellular disks
Down and up

29
Q

SA cells

A

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
Q

Depolerization

A

Action potiental

31
Q

Reset

A

The time it takes to reset the threshold sets how frequent your heart beats.

32
Q

SA cells

A

Positive charge Na

Depolerization triggers salts to rease ca and k
Potassium out resets

33
Q

P wave

A

Depolerization of a trail contractle fibers

34
Q

PQ interval

A

Atrium firing and ventricles going off.

35
Q

PQ spike

A

AV node depolerization because a lot of muscle firing different voltage.

36
Q

T wave

A

Resetting and relaxing

37
Q

T ventricles

A

Repolarize potassium coming back in

38
Q

Atrial cells

A

Best about 60 times per minute

39
Q

Ventricular cells

A

More slowly ( 20-40 min)

40
Q

Purkinje fibers

A

Spread within the muscle of the ventricle walls.

41
Q

Heart block

A

Any damage to the AV node can partially or totally release the ventricles from the control of AV node.

42
Q

SA node damage

A

Slower heart rate

43
Q

Finrilation

A

A rapid uncoordinated shuddering of the heart

44
Q

Average heart beat

A

75 times per minute

45
Q

Mid to late distole

A

Passively into and through the atria into the ventricles
Semi lunar valves are closed
AV valves are open

Contract and force blood

46
Q

Ventricle systole

A

Semi lunar forced open and blood rushes through

AV valves close

Altria relaxed and chambers fill with blood

47
Q

Early diastole

A

Ventricles relax

Semilunar snap shut

48
Q

Factors of the heart

A

Neural controls
Hormones and ions
Physical factors

49
Q

Epinephrine

A

Mimics the effects of the sympathetic nerves.

50
Q

Heart rate - heat

A

Heat increases heart rate by boosting the metabolic rate of heart cells

51
Q

Congestive heart failure

A

Pumping efficiency of heart is depressed

52
Q

Pulmonary edema

A

Fluids leak as pressures build into the lung tissue

Microbiology (19 decks)

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