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Anaphy Finals > Heart > Flashcards

Heart Flashcards

1
Q

It is a muscular organ that is
essential for life because it
pumps blood through the
body.

A

Heart

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2
Q

FUNCTION OF THE
HEART

A
  • generating blood pressure
  • routing blood
  • ensuring one-way blood flow
  • regulating blood supply
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3
Q

size of a heart

A

approximately the size of a closed fist

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4
Q

form of the heart

A

shaped like a blunt cone

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5
Q

located in the thoracic cavity between the two pleural cavities that surround the lungs.

A

heart

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6
Q

Located superiorly at the base of the heart

A

right and left atria

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7
Q

Extend from the base of the heart toward inferiorly at the apex of the heart

A

right and left ventricles

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8
Q

Extends around the heart, separating the atria from the ventricles

A

coronary sulcus

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9
Q

Originated from the right ventricle and carry blood to the lungs.

A

pulmonary trunk

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10
Q

Originated from the left ventricle, carries blood to the rest of the body

A

aorta

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11
Q

Receives blood from the veins

A

right and left atria

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12
Q

It ensures one-way blood flow

A

heart valve

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13
Q

Located between each atrium
and ventricle

A

Atrioventricular valves (AV)

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14
Q

Located between each
ventricle and its associated
great artery

A

Semilunar valves

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15
Q

Originate from the base of the
aorta, just above the aortic
semilunar valves.

A

coronary arteries

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16
Q

Supply blood to the wall of the
heart

A

coronary arteries

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17
Q

Drains blood from the cardiac
muscle

A

cardiac veins

18
Q

Carry blood from the wall of the
heart back to the right atrium.

A

cardiac veins

19
Q

also called the visceral
pericardium

A

epicardium

20
Q

the thick, middle layer of the
heart

A

myocardium

21
Q

The smooth inner surface of the
heart chambers

consists of simple squamous
epithelium over a layer of
connective tissue.

allows blood to move easily
through the heart

A

endocardium

22
Q

The surfaces of the interior walls
of the ventricles that are
modified by ridges and columns
of cardiac muscle

A

Trabeculae carneae

23
Q

are elongated, branching cells that contain one, or occasionally two, centrally located nuclei that are organized into spiral bundles or sheets

A

cardiac muscles

24
Q

record of these electrical events

A

Electrocardiogram (ECG

25
Q

It results from depolarization of the atrial myocardium.

A

P wave

26
Q

It consists of three individual waves: the Q, R, and S waves

A

QRS Complex

27
Q

It represents repolarization
of the ventricles.

A

T wave

28
Q

The beginning of the QRS
complex precedes
ventricular __________

A

contraction

29
Q

The beginning of the T
wave precedes ventricular
______

A

relaxation

30
Q

Time between the beginning of the P wave and the
beginning of the QRS complex

A

PQ interval

31
Q

Extends from the beginning of the QRS complex to the
end of the T wave

A

QT Interval

32
Q

refers to the repetitive pumping process that begins with the onset of
cardiac muscle contraction and ends with the beginning of the next contraction

A

cardiac cycle

33
Q

refers to contraction of the two atria.

A

atrial systole

34
Q

refers to relaxation of the two atria.

A

atrial diastole

35
Q

first heart sound; has a lower pitch
than the second

A

LUBB

36
Q

second heart sound. Occurs at the
beginning of ventricular diastole and results
from closure of the semilunar valves

A

DUPP

37
Q

when a heart valve does not close completely.

A

incompetent valve

38
Q

abnormal heart sounds; usually a
result of faulty valves

A

murmurs

39
Q

refers to regulation mechanisms contained within the
heart itself

A

INTRINSIC REGULATION OF THE HEART

40
Q

refers to regulation mechanisms external to the heart,
such as either nervous or chemical regulation

A

EXTRINSIC REGULATION OF THE HEART

Anaphy Finals (2 decks)

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