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Physiology > Heart/blood > Flashcards

Heart/blood Flashcards

1
Q

Higher volume. Full and relaxed

A

EDV

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2
Q

Blood volume leaving the heart

A

SV

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3
Q

SV=

A

EDV-ESV

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4
Q

Increased venous return=

A

Increased preload

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5
Q

Pushes back on heart. Influences stroke volume

A

Afterload

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6
Q

Increased afterload=

A

Decreased stroke volume= increased ESV

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7
Q

Cardiac output=

A

HRxSV

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8
Q

Maximum venous return=

A

EDV

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9
Q

What are the three types of plasma proteins

A

– Osmotic pressure
– Clotting
– Globulins

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10
Q

Globulins are produced by

A

B lymphocytes

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11
Q

Hematocrit=

A

(RBC h/whole h) x100

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12
Q

Process of producing red blood cells. Stimulated by tissue hypoxia

A

Erythropoiesis

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13
Q

Most numerous white blood cell. Phagocytic

A

Neutrophil

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14
Q

WBC. Allergic reactions. Parasites

A

Eosinophil

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15
Q

Least numerous white blood cell. Histamine, heparin

A

Basophil

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16
Q

WBC. Phagocytic. Differentiate into macrophages

A

Monocyte

17
Q

WBC. Produce anti-bodies. Humoral immunity

A

B lymphocytes

18
Q

WBC. Cell mediated immunity

A

T lymphocytes

19
Q

Gets built into blood clot

A

Plasminogen

20
Q

Breaks up clot when no longer needed

A

Plasmin

21
Q

Murmur with stiff narrowed valve. Whistling sound

A

Stenotic murmur

22
Q

Murmured with leaky valve-Backflow. Swish/gargle sound

A

Insufficient murmur

23
Q

Mechanical Junction that anchors cells together

A

Desmosomes

24
Q

Spreads action potentials. Tunnel allows all cells to contract at once

A

Gap junctions

25
Q

Cells that work to pump blood

A

Contractile cells

26
Q

Cells that initiate and spread action potentials. Pacemaker activity

A

Autorhythmic cells

27
Q

What is the order of cardiac electrical activity

A

– SA node
– AV node
– Bundle of his
– Purkinje fibers

28
Q

P-R

A

Atria contract

29
Q

S-T

A

Ventricles contract

30
Q

SA node is causing atria to contract

A

Ventricular filling

31
Q

AV node – his – Purkinje

A

Isovolumetric ventricular contraction

32
Q

Volume decreases as blood is pumped out of ventricle

A

Ventricular ejection

33
Q

Repolarization of ventricles

A

Isovolumetric relaxation

34
Q

Extrinsic cardiac controls

A

– ANS

– Hormones

35
Q

Impedance to bloodflow in arteries. Afterload

A

Total peripheral resistance

36
Q

Strength of ventricular contraction

A

Contractility

37
Q

More blood in equals more blood out

A

Frank Starling law

38
Q

Lower volume. After ejection/contraction

A

ESV

Physiology (13 decks)

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