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10 science-- biology > circulatory system > Flashcards

circulatory system Flashcards

(56 cards)

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1
Q

what is the circulatory system made up of?

A

heart
blood vessels
blood

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2
Q

what are 2 functions of the circulatory system?

A 
picks up and moves nutrients and oxygen to body tissues
carries waste (carbon dioxide) from the body tissues to organs responsible for removing them from the body
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3
Q

what are the 4 components of blood?

A

red blood cells
white blood cells
platelets
plasma

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4
Q

what do red blood cells do?

A

contain hemoglobin, picks up oxygen and carbon dioxide

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5
Q

what do white blood cells do?

A

fight and destroy disease causing bacteria and viruses

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6
Q

what do platelets do?

A

help the blood clot, seal wounds, stop bleeding

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7
Q

what does plasma do?

A

carries blood cells, dissolved wastes, nutrients, hormones

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8
Q

what does an artery look like?

A

large and thick muscular walls

no valves

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9
Q

what does a vein look like?

A

large and thinner walls

has valves

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10
Q

what does a capillary look like?

A

tiny and thin wall

one epithelial cell thick

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11
Q

what is the function of an artery?

A

carries blood away from the heart under high pressure to body parts
muscular wall squeeze blood from heart

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12
Q

what is the function of a vein?

A

carries blood toward the heart under low pressure from body parts
valves allow blood to move to heart

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13
Q

what is the function of a capillary?

A

allows the exchange of gases, nutrients, and wastes between the blood and the body tissues

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14
Q

what is the heart?

A

muscular organ that pumps blood

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15
Q

what is the function of the superior vena cava?

A

moves deoxygenated blood from upper body to the right atrium

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16
Q

what is the function of the aorta?

A

pumps blood to the rest of the body

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17
Q

what is the function of the right atrium?

A

receives blood from vena cava and allows blood flows into right ventricle

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18
Q

what is the function of the pulmonary arteries?

A

moves deoxygenated blood to lungs

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19
Q

what is the function of the inferior vena cava?

A

moves deoxygenated blood from lower body to the right atrium

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20
Q

what is the function of the pulmonary veins?

A

moves oxygenated blood from lungs

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21
Q

what is the function of the right AV valve?

A

allows blood flows into right ventricle

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22
Q

what is the function of the left atrium?

A

receives oxygenated blood from lungs

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23
Q

what is the function of the right semilunar valve?

Study These Flashcards
A

allows blood flows into pulmonary artery

24
Q

what is the function of the left AV valve?

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A

allows blood flows into left ventricle

25
what is the function of the right ventricle?
pumps deoxygenated blood to lungs
26
what is the function of the left semilunar valve?
allows blood flows into aorta
27
what is the function of the septum?
separates right and left ventricles
28
what is the function of the left ventricle?
pumps oxygenated blood to the body
29
what is the right AV valve?
right atrioventricular valve | tricuspid valve
30
what is the left AV valve?
left atrioventricular valve | mistral valve
31
what is the right semilunar valve?
pulmonary valve
32
what is the left semilunar valve?
aortic valve
33
the deoxygenated blood travels from the body to ______ through _____ (upper body) and _____ vena cava (lower body)
the right side of the heart / superior / inferior
34
the right side of the heart pumps __________ to the lungs through _______ arteries
deoxygenated blood / pulmonary
35
gas exchange takes place in the _____-- blood in capillaries absorbs _____ and gives off _______
lungs / oxygen / carbon dioxide
36
the oxygenated blood travels back from the lungs to _______ of the heart through ______ veins
the left side / pulmonary
37
the heart pumps the _______ to the rest of the body through ______
oxygenated blood / aorta
38
blood travels in a figure 8 pathway from the heart to the _____, back to the heart, then ________, and finally returning to the _____
lungs / throughout the body / heart
39
how does the blood move through the heart (first)?
right atrium relaxes-- receives deoxygenated blood from the body left atrium relaxes-- receives oxygenated blood from lungs
40
how does the blood move through the heart (second)?
right ventricle contracts-- sends deoxygenated blood to lungs left ventricle contracts-- sends oxygenated blood to the body
41
what is the "lub" sound of the heartbeat?
closing of AV valves
42
what is the "dup" sound of the heartbeat?
closing of semilunar valves
43
how many times does a heart beat on average per minute?
70 times
44
what is blood pressure?
measure how hard the blood is pushing against the inside of the arteries
45
what is high blood pressure?
140/90 or higher
46
high blood pressure can cause ________
heart disease
47
what is systolis?
heart contracts, blood pressure rises, blood moves out along the vessels
48
what is diastolic?
heart relaxes, blood pressure falls, blood fills the heart
49
what are coronary arteries?
blood vessels that provide blood with (oxygen and nutrients) to the heart muscle tissue itself
50
what happens when coronary arteries become partially blocked with plaque
atherosclerosis
51
what is plaque made out of?
fat, cholesterol, calcium
52
what is atherosclerosis?
thickening of the walls of the arteries which narrow the passageway for blood and can cause blood clots
53
what does plaque do to the arteries and the heart?
narrows the arteries, reduces blood flow to the heart
54
when plaque narrows the arteries, what can happen?
blood clots
55
blood clots block the blood flow causing _________
chest pain / heart attack
56
what is a heart attack?
plaque in the coronary artery breaks apart forms a blood clot blocking blood flow no oxygen and nutrients to the heart heart stops pumping and heart tissue starts to die

10 science-- biology (24 decks)

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