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Science > Circulatory system > Flashcards

Circulatory system Flashcards

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1
Q

erythrocytes

A

red blood cells

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2
Q

leucocytes

A

white blood cells

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3
Q

red blood cells

A

living cells in the blood that transport oxygen to all other living cells in the body

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4
Q

hemoglobin

A

the red pigment in red blood cells that carries oxygen

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5
Q

oxyhemoglobin

A

hemoglobin with oxygen molecules attached

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6
Q

white blood cells

A

living cells that fight bacteria and viruses as part of the human body’s immune system

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7
Q

platelets

A

small bodies involved in blood clotting. They are responsible for healing by clumping together around a wound.

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8
Q

circulatory system

A

the body system that circulates oxygen in the blood to all the cells of the body.

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9
Q

arteries

A

hollow tubes (vessels) with thick walls carrying blood pumped from the heart to other body parts

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10
Q

veins

A

blood vessels that carry blood back to the heart. They have valves and thinner walls than arteries.

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11
Q

capillaries

A

minute tubes carrying blood to body cells. Every cell of the body is supplied with blood through capillaries.

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12
Q

oxygenated blood

A

red blood that has been supplied with oxygen

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13
Q

deoxygenated blood

A

blood from which some oxygen has been removed

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14
Q

vena cava

A

large vein leading into the top right chamber of the heart

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15
Q

left atrium

A

upper left section of the heart where oxygenated blood from the lungs enters the heart

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16
Q

right atrium

A

upper right section of the heart where deoxygenated blood from the body enters

17
Q

left ventricle

A

lower left section of the heart, which pumps oxygenated blood to all parts of the body

18
Q

right ventricle

A

lower right section of the heart, which pumps deoxygenated blood to the lungs

19
Q

valves

A

flap-like folds in the lining of a blood vessel or other hollow organ that allow a liquid, such as blood, to flow in one direction only

20
Q

‘lub dub’

A

the sound made by the heart valves as they close

21
Q

blood pressure

A

measures how strongly the blood is pumped through the body’s main arteries

22
Q

systolic pressure

A

the higher blood pressure reading during contraction of the heart muscles

23
Q

diastolic pressure

A

the lower blood pressure reading during relaxation of the heart muscles

24
Q

heartbeat

A

contraction of the heart muscle occurring about 60–100 times per minute

25
Q

pulse

A

alternating contraction and expansion of arteries due to the pumping of blood by the heart

Science (11 decks)

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