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BIOL 224 > Lab 1-4 > Flashcards

Lab 1-4 Flashcards

1
Q

Atrial systole

A

Atrial contraction

AV valves close

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2
Q

First heart sound

A

AV valves close during VENTRICULAR CONTRACTION

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3
Q

2nd heart sound

A

Closing of SL valves during VENTRICULAR RELAXATION

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4
Q

Murmurs caused by:

A 
Abnormal valves 
Defect septum
Ductus arteriosum
Foramen ovalis
Abnormal development in structure
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5
Q

ECKG

A

Graphs electrical changes that occur in the heart during a cardiac cycle

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6
Q

P wave

A

P- ATRIAL DEPOLARization

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7
Q

QRS wave complex

A

QRS- VENTRICULAR DEPOLARization

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8
Q

T wave

A

T- VENTRICULAR REPOLARization

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9
Q

Atrial depolarization

A

Missing because when AR (diastole), ventricles start depolarization (systole)

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10
Q

Artery

A

Away from the heart
Rippled
Vessel constriction

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11
Q

Blood moves fastest in what blood vessel? Why?

A

Artery - less cross sections, high driving force (pressure)

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12
Q

Blood moves slowest in which vessel?

A

Capillary - MORE cross sections

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13
Q

Blood vessel with the smallest diameter? Why?

A

Artery - pressure and return flow

Input volume = output volume of blood in same area

Input volume or output volume = speed x diameter

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14
Q

Volume pulse

A

Change in blood volume with each cardiac cycle. Reflects blood flow in peripheral circulation

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15
Q

Dicrotic notch

A

Elastic recoil of artery after aortic valve closes

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16
Q

Converging vs diverging vessels

A

Veins converge

Arteries diverge

17
Q

Plethysmograph

A

Measures change in size of organ or amount of blood flowing through it

18
Q

What occurrence is responsible for dicrotic notch?

A

Respiration- normally during inspiration of air

*Elastic rebound of aorta after aortic SL valves close

19
Q

Why is the slope of the rising edge volume steeper than the falling edge?

A

Rising edge corresponds to active contraction and falling edge to passive relaxation

20
Q

How is heart rate determined?

A

Volume pulse recording - elapsed time for several cardiac cycles

21
Q

When a person stands what changes?

A

Amplitude decreases
Blood pressure decreases

Heart rate increases

22
Q

Blood pressure

A

Pressure required to close off blood flow through a superficial artery

23
Q

Systolic pressure

A

Peak pressure during ventricular systole

24
Q

Diastolic pressure

A

Minimum pressure at ventricular diastole

25
Q

Agglutinogen

A

Antigen on erythrocyte surface

26
Q

Agglutinins

A

Antibodies in plasma

27
Q

Neutrophils

A

60-70%

28
Q

Lymphocyte

A

25-30%

29
Q

Monocytes

A

3-8%

30
Q

Eosinophil

A

2-4%

31
Q

Basophils

A

0.5-1%

32
Q

Functions of lymphatic system

A 
Return IF
Filter lymph 
Absorb product of fat digestion in small intestine
Immune response 
Maintain homeostasis

BIOL 224 (5 decks)

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