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Grade 9 Science QUARTER 1 > 1.2 The Cardivascular System > Flashcards

1.2 The Cardivascular System Flashcards

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Biology 101 flashcards
1
Q

a transport system that carries gases, nutrients, hormones, and wastes, and other substances all around the body

A

cardiovascular system

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2
Q

This System is composed of the heart, blood vessels, and blood

A

cardiovascular system

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3
Q

a hollow somewhat cone-shaped organ that weighs less than a pound

A

heart

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4
Q

the area in the chest that is between the lungs and above the diaphragm

A

mediastinum

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5
Q

The apex or tip of the heart is directed (blank)

A

downward

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6
Q

the base points of the heart toward the (blank)

A

right shoulder

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7
Q

The (blank) vessels of the body are connected to the heart’s base

A

major

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8
Q

The heart has coverings–an outer one called the (blank)

A

parietal pericardium

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9
Q

the heart has coverings–an inner one called the (blank)

A

visceral pericardium or epicardium

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10
Q

The (blank) produce a lubricating fluid that allows the heart to beat smoothly in a frictionless environment

A

pericardial membranes

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11
Q

The heart is a muscular organ, its walls have (blank) layers

A

three

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12
Q

the name of the hearts three layers

A

the epicardium, myocardium, and endocardium

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13
Q

the (blank), the outermost layer, is the inner heart covering

A

epicardium

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14
Q

The (blank) is the muscular part of the heart wall and the part that actually contracts.

A

myocardium

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15
Q

The (blank) is the thin innermost layer that lines the heart cavities or chambers

A

endocardium

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16
Q

The four hollow chambers of the heart are (blank)

A

the right and left atria and the right and left ventricles

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17
Q

The atria are the (blank) chambers

A

receiving

18
Q

the ventricles are the (blank) chambers

A

discharging or pumping

19
Q

The blood goes into the (blank) and then fills the (blank)

A

atria, ventricles

20
Q

When the ventricles contract, the blood (blank)

A

leaves the heart

21
Q

The heart has (blank) valves that keep the flow of blood going in (blank) direction.

A

4, one

22
Q

the hearts 4 valves

A

two atrioventricular (AV) valves and the two semilunar valves.

23
Q

The AV valves are found between the (blank) and the (blank)

A

atria, ventricles

24
Q

They prevent the back flow of blood from the ventricles to the atria.

A

atrioventricular (AV) valves

25
Q

The (blank) valve is the left AV valve

A

bicuspid or mitral

26
Q

(blank) valve is the right AV valve

A

tricuspid

27
Q

The bicuspid valve consists of (blank) cusps or flaps

A

two

28
Q

the tricuspid valve has (blank) cusps or flaps

A

three

29
Q

The (blank) prevent the backflow of blood to the ventricular chambers

A

semilunar valves

30
Q

The semilunar valves consist of the pulmonary or aortic valves, both of which have (blank) cusps each

A

three

31
Q

The AV valves open when the heart (blank) and close when the ventricles (blank)

A

open, contract

32
Q

The semilunar valves (blank) when the heart relaxes and (blank) when the ventricles contract

A

close, open

33
Q

When the (blank) close the first heart sound (lub) is produced

A

atrioventricular valves AV

34
Q

The second heart sound (dub) occurs when the (blank) close.

A

semilunar valves

35
Q

the universal blood group donor

A

type O

36
Q

average heartbeat of a healthy human adult

A

60-100 beats per MINUTE

37
Q

lymphoid organ that filters lymph

A

lymph node

38
Q

leukocyte, erythrocyte, and thrombocyte, which one is anucleate?

A

erythrocyte

39
Q

what does the artery do

A

carries blood away from heart

40
Q

defined as the total amount of exchangeable air

A

vital capacity (VC)

41
Q

middle and thickest of the heart’s three layers

A

myocardium

Grade 9 Science QUARTER 1 (6 decks)

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