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Science test Flashcards

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Biology 101 flashcards
1
Q

The internal balance of a living organism is called

A

homeostasis

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2
Q

The ______ ________ is one of the main systems for maintaining homeostasis.

A

Circulatory system

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3
Q

is an iron containing pigment that makes erythrocytes appear red

A

hemoglobin

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4
Q

________ are chemicals produced by leukocytes that attack invading organisms or poisons

A

antibodies

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5
Q

are very small cell fragements that help in blood clotting…………

A

platelets

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6
Q

are thick blood vessels that always carry blood away from the heart

A

arteries

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7
Q

the smallest vessels are called

A

capillaries

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8
Q

the is a muscular organ about the size of your fist

A

heart

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9
Q

the upper thin walled chambers are called

A

atria

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10
Q

the larger inferior thick walled chambers are

A

ventricles

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11
Q

the atrium and ventricle on each side of the heart are separated by one way valves called

A

AV

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12
Q

the are located at the exits of the venticles

A

semilunar valves

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13
Q

the inferior ruturns blood from the lower body rigions …………

A

inferior vena cava

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14
Q

____ is the largest artery in the body

A

aorta

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15
Q

the pressure of circulatin blood against the walls of the arteries is called

A

blood pressure

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16
Q

the body’s final line of defense is the

A

immune system An——– is an overrecation of the immune system to a foreign substance that normally is not a pathogen

17
Q

the main organs of the excretory system are the

A

kidneys

18
Q

the are tubes that carry the wastes and water filtered out of the blood down to the urinary bladder

A

ureters

19
Q

the _______ _______ is a muscular bag that temporarily stores th fluid wastes frol the knidneys

A

urinary bladder

20
Q

A ______ is th eunit in the kidney that filters the blood

A

nephron

21
Q

the ______ from the nephrons collects in the kidney and then passes into the urteter

A

urine

22
Q

The proper name for red blood cells

A

erythrocytes

23
Q

white blood cells

A

leukocytes

24
Q

a cell fargment found in the blood that is involved in the formation of blood clots

A

platelet

25
Q

an immunity in which a person maufactures his own antibodies or has activated t cells for a particular antigen

A

active

26
Q

an immuntiy in which a person has been given antbodies that were formed by another person or animal

A

passive

27
Q

the artificial removal of wastes from te blood o fa person with low kidney function

A

dialysis

Science (44 decks)

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