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AP2 > Heart > Flashcards

Heart Flashcards

1
Q

INTERCALAED DISCS
BRANCHED
SELF PACED
EPINEPHRINE CONTROLLED

A

Hear Muscle Tissue

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2
Q

NUCLEI PUSHED TO EDGE
VOLUNTARY
MOVES SKELETON
ACETYLCHOLINE CONTROLLED

A

Skeletal Tissue

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3
Q

(INTERNAL ORGANS & VESSELS
ALMOND SHAPED
INVOLUNTARY
PARASYMPATHETIC ACETYLCHOLINE
CONTROLED

A

SMOOTH MUSCLE

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4
Q

a double-walled sac around the heart
composed of a superficial fibrous pericardium.

A

Pericardium
(peri means around, cardiac mean heart)

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5
Q

visceral
layer of the serous
pericardium

A

Epicardium

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6
Q

cardiac
muscle layer forming the bulk of the heart

A

Myocardium

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7
Q

crisscrossing,
interlacing layer of
connective tissue

A

Fibrous skeleton of the
heart

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8
Q

endothelial layer of the
inner myocardial surface

A

Endocardium
(inside)

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9
Q

Blood enters right atria from ______

A

superior
and inferior venae cavae and
coronary sinus

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10
Q

Blood enters left atria____

A

from
pulmonary veins

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11
Q

What is the functional blood supply to the heart muscle itself

A

Coronary circulation

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12
Q

What ensure blood delivery to heart even if major vessels are occluded

A

Collateral routes

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13
Q

what ensure
unidirectional blood flow through the heart

A

Heart valves

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14
Q
  • Aortic semilunar valve lies between the left ventricle and the aorta
  • Pulmonary semilunar valve lies between the right ventricle and pulmonary
    trunk
  • Semilunar valves prevent backflow of blood into the ventricle
A

Heart Valves

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15
Q

contraction of heart muscle top number of bp

A

Systole

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16
Q

relaxation of heart muscle bottom number of bp

A

Diastole

17
Q

early diastole, Ventricles relax, Backflow of blood in
aorta and pulmonary
trunk closes semilunar
valves

A

Isovolumetric relaxation

18
Q

brief rise in
aortic pressure caused by
backflow of blood
rebounding off semilunar
valves

A

Dicrotic notch

19
Q

What is the amount of blood pumped by each ventricle in one minute and the product of heart rate (HR) + stroke volume (SV)

A

Cardiac Output (CO)

20
Q

What is the number of heart beats per minute

A

HR (Reverse)

21
Q

What is the amount of blood pumped out by a ventricle with each beat

A

SV

22
Q

What is the difference between resting and maximal CO

A

Cardiac reverse

AP2 (11 decks)

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