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Anatomy Cardivascular & Respiratory Systems > Chaptee 13 & 16 > Flashcards

Chaptee 13 & 16 Flashcards

Heart function and blood flow

1
Q

what is the internal smooth layer of tissue in the heart

A

endocardium

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2
Q

what is the muscular layer of the heart wall

A

myocardium

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3
Q

name of the right av valve

A

tricuspid valve

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4
Q

name av valves

A

tricuspid and bicuspid valve

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5
Q

name semilunar valves

A

pulmonary semilunar and aortic semilunar valve

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6
Q

pacemaker of heart

A

sinotrial node

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7
Q

causes first sound of heart

A

closing of av valves

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8
Q

which vessels return blood from the lungs to the heart during pulmonary circulation

A

pulmonary veins 4

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9
Q

blood from right side of heart is forced to flow where

A

lungs/pulmonary trunk

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10
Q

location of heart

A

within mediastinum pericardium and thorax

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11
Q

all veins that carry blood directly to heart

A

superior and inferior vena cava coronary veins and pulmonary veins

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12
Q

vessels that provide blood to heart tissues

A

coronary arteries

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13
Q

valve found between left atrium and left ventricle

A

bicuspid valve

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14
Q

structure that attaches papillary muscles to valves

A

chordae tendinaea

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15
Q

characteristics of cardiac muscle cells

A

enlomgated, branching, central nucleus, striated, involuntary, numerous mitochondria, intercalated disks

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16
Q

conduction system of the hearr

A

specialized cardiac muscle cells that pass action potentials

17
Q

pathway of conduction system of heart IN ORDER

A

SA node, AV node, Bundles of HIS, Purkinje fibers

18
Q

pathway of blood flow from heart to lungs and body

A

superior and inferior vena cava, right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve, pulmonary valve, right and left pulmonary arteries, lungs, pulmonary veins, left atrium, bicuspid valve, left ventricle, left ventricle, aorta, body systems, veins, vena cava

19
Q

source in which blood enters the right atrium

A

superior and inferior vena cava and coronary sinus.

20
Q

cause of DUPP sound

A

closing of semilunar valves

21
Q

what is the parietal pericardium

A

pericardium layer just beneath fibrous pericardium

22
Q

large external groove that separates the atria from the ventricles

A

coronary sulcus

23
Q

what are auricles

A

ear like extension lateral of atria

24
Q

functions of the skeleton of the heart

A

provides support for valves, electrical insulation b/w atria and ventricles, and attachment for cardiac muscle.

25
Q

what is cardiac output

A

stroke volume times the heart rate (# of contractions per min)

26
Q

what processes make up respiration

A

ventilation, external respiration, transport, and internal respiration.

27
Q

pathway of air through the bronchial tree

A

secondary bronchi, tertiary, bronchioles, terminal, respiratory, alvcolar ducts, alvcoli.

28
Q

in what specific respiratory structure does actual gas exchange take place

A

alvcoli

29
Q

in what form is carbon dioxide transported within the blood

A

bicarbonate ions

30
Q

what is the amount of the total lung capacity

A

5-6 liters

31
Q

where do foreign objects that enter that trachea usually lodge

A

right primary bronchus

32
Q

what percentage of oxygen combines with hemoglobin in the blood

A

97%

33
Q

what is the function of hilum

A

entry for bronchi, vessels, and nerves

34
Q

how many lobules compose the right lung, the left lung

A

10, 9

35
Q

describe lobules of lungs

A

blood vessels and bronchi dont cross septa, can be removed, 9 on left 10 on right

36
Q

why is the left primary bronchus more horizontal than the right primary bronchus

A

it is displaced by the position of the heart

37
Q

what heart chamber is the thickest

A

left ventricle

Anatomy Cardivascular & Respiratory Systems (1 decks)

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