SIreviewquestions Flashcards

1
Q

great cardiac vein drains blood from the heart muscle to

A

right atrium

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2
Q

autonomic cneters for cardiac function are located in the …

A

cardiac centers of the medulla oblongata

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3
Q

serous membrane covering the inner surface of the heart is the

A

endocardium

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4
Q

simple squamous epithelium covering the valves of teh heart constitutes the

A

endocardium

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5
Q

during diastole a chamber of the heart will

A

relax and fill with blood

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6
Q

during the cardiac cycle, amount of blood ejected from the left ventricle when the semilunar valve opens is the

A

stroke volume

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7
Q

true or false: the refractory period of a cardiac muscle is longer than skeletal muscle

A

true

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8
Q

cardiac output cannot increase indef bc

A

the available filling time becomes shorter as the heart rate increases

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9
Q

thickest layer of the heart wall is the

A

myocardium

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10
Q

freshly oxygenated blood is first received by

A

left atrium

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11
Q

atrial depoliarization coincides with what wave

A

P wave

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12
Q

what depolarizes next after the AV node>

A

bundle branches

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13
Q

SA node, AV node, AV bundle, R&L bundle branches, purkinje fibers

A

electrical impulse pathway thru conducting system of heart

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14
Q

3 factors regulating stroke volume to ensure that the left and right ventricles pump equal vlumes of blood

A

1) preload, the stretch on the heart before it contracts
2) contractility, the forcefulness of contraction of individual ventricular muscle fibers
3) afterload, the pressure that must be exceeded before blood can be ejected from the ventricles

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15
Q

plasma accounts for 55% of the volume of hole blood and water accounts for __% of plasma volume

A

92

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16
Q
vascular spasm
platelet phase
coagulation
retraction
fibrinolysis
A

sequence of hemostasis

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17
Q

stem cells responsible for lymphopoiesis located in

A

thymus, spleen, lymph nodes, red bone marrow,

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18
Q

calcium and vitamin k affect almost every aspect of the ___ process

19
Q

waste product bilirubin is formed from __

20
Q

rely on anaerobic respiration, large part of their volume is hemoglobin, and shape increases membrance surface area

A

erythrocytes

21
Q

serious bacterial infection leads to more of these cells in the blood

A

neutrophilis

22
Q

reduce blood flow to the kidneys lead to increased__

A

erythropoiesis

23
Q

blood cells that attack a specific antigen is a

A

lymphocyte

24
Q

leukocyte that releases histamine and other inflammatory chemicals is the

25
leukocytes share diapedesis, disease fights, and more active in connective tissues than in blood but not
distorted lobed nuclei
26
difference between thrombus and an embolus
thrombus must travel to become an embolus
27
plasma component that forms fibrous skeleton of a clot consists of
firbinogen
28
blood vessels that play most important role in regulating blood pressure and blood flow to a tissue are the
arterioles
29
baroreceptors that function in the reg of bp are located in the
carotid sinus
30
2 way exchange of substances btwn blood and body cells occurs only thru ___
capillaries
31
large molecules such as peptides and proteins move into and out of the bloodstream by way of __ __
fenestrated capillaries
32
local control of blood flow due to the action of precapillary sphincters is
autoregulation
33
blood is transported thru the venous system by means of ...
muscular contractions and the respiratory pump
34
net hydrostatic pressure forces water OUT OF a capillary; net osmotic pressure forces water ___ capillary
into
35
2 arteries formed by the division of the brachiocephalic trunk are
common carotid and subclavian
36
unpaired arteries supplying blood to the visceral organs include
the celiac and superior and inferior mesenteric arteries
37
paired arteries supplying blood to the body walla ndother structures outside the abdominopelvic cavity include the
iliac , femoral, and lumbar arteries
38
the vein that collects most of the venous blood from below the diaphragm is the
inferior vena cava
39
tunica intima includes
simple squamous epithelium, loose connective tissue, smooth muscle
40
inferior vena cava can function as a blood __
reservoir
41
increase in capillary hydrostatic ressure results in incrased ___ from capillaries to the interstitial space
filtration
42
which layer of artery wall thickens most in atherosclerosis
tunica intima
43
which vessels is bilaterally symmetrical of the pair occurs on each side of the body
internal carotid artery
44
drainage of superficial venous blood from the leg we find that blood enters the great saphenous vein, femoral vein, inferior vena cava, and right atrium but whats missing is
external and common iliacs