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Biology > circulatory system crossword > Flashcards

circulatory system crossword Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

one of the layers found in arteries which allows them to constrict or dilate to modify blood pressure

A

smooth muscle

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2
Q

larger blood vessels which carry blood back to the heart

A

veins

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3
Q

the main part of the heart (mostly composed of muscle)

A

myocardium

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4
Q

the chamber of the heart which receives blood from the rest of the body

A

right atrium

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5
Q

smaller vessels that carry blood away from the heart

A

arterioles

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6
Q

chamber of the heart that receives blood returning from the lungs

A

left atrium

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7
Q

large vessel that carries blood away from the heart

A

arteries

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8
Q

oxygenated blood is found on the _____ side of the heart

A

left

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9
Q

sound made by the heart valves during atrial contraction

A

lub

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10
Q

contractions in these muscles help to push blood through the veins and back to the heart

A

skeletal muscle

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11
Q

the ____ node receives a signal from the sa node and initiates ventricle contraction

A

AV

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12
Q

the heart is able to beat without the control of the brain, which is called ___ ?

A

intrinsic

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13
Q

relaxation of the heart muscle - lowest arterial blood pressure

A

diastole

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14
Q

largest artery in the body

A

aorta

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15
Q

membrane which surrounds the heart

A

perachardium

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16
Q

smaller blood vessel which carry blood back ti the heart

A

venuoles

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17
Q

the pulmonary arteries carry blood back to the ____

A

lungs

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18
Q

____ circulation occurs on the right side of the heart

A

pulmonary

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19
Q

the hepatic _____ vein takes blood from the small intestine to the liver

A

portal

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20
Q

the _____ vena cava returns blood from the lower parts of the body (works upwards)

A

inferior

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21
Q

percentage of blood in the arteries at any one time

A

twenty

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22
Q

the most muscular of the heart chambers

A

ventricles

23
Q

the ____ arteries take blood to and from the kidneys (waste)

A

renal

24
Q

the right ___ valves separates the right atrium and ventricle

A

atrioventricular

25
Q

_____ circulation occurs on the left side of the heart

A

systemic

26
Q

these veins return blood from the head

A

jugular

27
Q

the pulmonary _____ valve prevents the back flow of blood as the right ventricle contracts to pump blood to the lungs

A

semi-lunar

28
Q

____ pressure is created by the presence of salts and plasma proteins found in blood

A

osmotic

29
Q

the _____ artery takes blood from the heart to the small intestine

A

mesentery

30
Q

the ___ node is known as the pacemaker, as it initiates the heartbeat

A

SA

31
Q

the expansion of the blood vessel during systole

A

pulse

32
Q

substances tend to move into the cells on the ___ side of the capillaries

A

arterial

33
Q

the numbers of tissue in arteries

A

3

34
Q

a device used for measuring blood pressure

A

sphygmomanometer

35
Q

_____ is the lowest in the venules and veins

A

blood pressure

36
Q

muscle found in heart

A

cardiac

37
Q

the ____ arteries carry blood to the head

A

carotid

38
Q

substances tend to move out of the cells and into the blood on the ____ side of the capillaries

A

venous

39
Q

structures in veins which prevent back flow of the blood

A

valves

40
Q

tiny blood vessels which deliver nutrients to individual cells

A

capillaries

41
Q

the ____ vena cava returns blood from the parts of the body that are above the heart (works downward)

A

superior

42
Q

maximum contraction of the ventricles - highest blood pressure

A

systole

43
Q

the wall which divides the two sides of the heart

A

septum

44
Q

these arteries and veins take blood to and from the arms

A

subclavian

45
Q

another name for the left atrioventricular valve

A

bicuspid

46
Q

the ____ arteries take blood to the heart

A

coronary

47
Q

_____ is affected by stress, oxygen levels, exercise, and blood pressure

A

heart rate

48
Q

total cross sectional area of the blood vessels is highest in the ____ beds

A

capillary

49
Q

the ____ fibres carry the electrical signal down to the ventricles to initiate contraction

A

purkinjie

50
Q

the aorta divides into the ____ arteries in the pelvic regions

A

iliac

51
Q

these muscles can contract to stop the blood flow to capillary beds in certain areas of the body

A

sphyncter

52
Q

one of the layers found in the arteries which allows them to stretch during a pulse

A

elastin

53
Q

capillaries are only ___ cell layer thick in order to allow the most efficient transport of materials across their walls

A

one

54
Q

the aortic ____ is where blood first leaves the left ventricle

A

arch

Biology (4 decks)

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