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ANAPHY > Cardiovascular System > Flashcards

Cardiovascular System Flashcards

(58 cards)

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1
Q

organ system responsible for transportation of blood

A

Cardiovascular System

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2
Q

located around the 5th intercostal space (top)

A

apex

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3
Q

located beneath 2nd rib (tip)

A

base

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4
Q

protection of the heart

A

pericardium

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5
Q

outer part of pericardium

A

Fibrous Pericardium

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6
Q

inner part of pericardium

A

serous pericardium

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7
Q

two parts of serous pericardium

A

parietal and visceral

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8
Q

outermost layer of the heart

A

Epicardium

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9
Q

middle layer of the heart

A

myocardium

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10
Q

innermost layer of the heart

A

endocardium

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11
Q

two chambers of the heart

A

atria and ventricles

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12
Q

atria ____ blood

A

receives

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13
Q

ventricles are responsible for____

A

discharging ?? (need ko ppt anong notes to?)

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14
Q

give the two atrioventricular valves

A
  1. Tricuspid
  2. Mitral (Bicuspid)
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15
Q

give the two semilunar valves

A
  1. Pulmonary
  2. Aortic
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16
Q

explain blood flow

A
  1. inferior/ superior vena cava
  2. RA to Tricuspid (opens)
  3. RV
  4. (contract) open Pulmonary Valve
  5. Pulmonary Artery
  6. Lungs (oxygenation)
  7. Travels to heart via Pulmonary Vein
  8. LA
  9. (opens) Mitral/ Bicuspid Valve
  10. (contract) opens aortic valve
  11. Aorta
  12. Aorta&raquo_space;> arteries&raquo_space;> rest of the body
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17
Q

heart strings

A

chordae tendinae

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18
Q

systole

A

ventricular contraction

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19
Q

diastole

A

ventricular relaxation

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20
Q

sinoatrial node

A

primary pacemaker; starts electrical impulse

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21
Q

atrioventricular node

A

delays the blood entry

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22
Q

bundle of His

A

septum of the heart ; divisions

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23
Q

R and L bundles

A

send signals

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24
Q

Purkinje Fibers

Study These Flashcards
A

spread / delivers electrical impulse ; biggest pacemaker

25
how many b/m on AV Nodes
40-60
26
how many b/m on sinoatrial node
60-100
27
intrinsic conduction system
provides the beating system of the heart
28
cardiac cycle
one complete heartbeat ; 75 times/minute
29
normal length / cardiac cycle
0.8s
30
tachycardia
fast heartbeat
31
bradycardia
slow heartbeat
32
periods of cardiac cycle
1. Mid-late diastole 2. Ventricular Systole 3. Early Diastole
33
what period of cardiac cycle occurs when the ventricles are at complete rest or relaxed state
Early Diastole
34
in ventricular systole, AV valves are ___, while SV valves are ____
closed ; closed
35
what happens in mid to late diastole
ventricular filling and atrial contraction
36
isovolumetric contraction and ventricular contraction falls under what period of cardiac cycle
ventricular systole
37
what phase occurs in early diastole
isovolumetric relaxation
38
S1
lubb sound
39
lower sound ; lower pitched and longer ; caused by closing of AV valves
S1 (lubb)
40
second heart sound ; high pitched ; shorter; caused by closing of SV valves
S2 (dub)
41
ventricular gallop (S3)
ta (after dub)
42
S4
ta - (before lub) ; atrial gallop
43
cardiac output
amount of blood pumped out by the heart in 1 min ; 6L
44
stroke volume
blood pumped out by ventricles with each heartbeat
45
formula of cardiac output
HR x SV
46
what does vascular system consist of?
1. arteries 2. ventricles 3. capillaries
47
tunica intima
This is the innermost layer of the blood vessel ; consists of endothelial cells
48
It provides a smooth, frictionless surface for blood flow, minimizing resistance and facilitating efficient circulation. The endothelial cells play a role in regulating vascular tone, blood clotting, and immune responses.
tunica intima
49
tunica media
This is the middle layer of the blood vessel and is the thickest layer in arteries.
50
It controls the diameter of the vessel, regulating blood flow and blood pressure through vasoconstriction and vasodilation. The smooth muscle fibers allow the vessel to contract and expand in response to stimuli.
tunica media
51
tunica externa
This is the outermost layer of the blood vessel.
52
It provides structural support and elasticity to the blood vessel, helping it withstand external pressure. It anchors the vessel to surrounding tissues, ensuring its position and stability.
tunica externa
53
what blood do arteries carry
oxygenated blood ; dirty blood
54
the pressure of blood in the arteries are ____
high
55
what blood do veins carry
deoxygenated blood ; clean blood
56
the pressure of blood in the veins are ____
low
57
what blood do capillaries carry
oxygenated on the arterial side and deoxygenated on ventrial side
58
thinnest artery
capillaries

ANAPHY (9 decks)

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