Body Organization Answers

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3

Which lists three units of an organ system in order from the simplest to the most complex?

A
red blood cell → heart → tissue
B
skeleton → bone → bone cell
C
muscle cell → muscle tissue → stomach
D
lung tissue → lung → circulatory system
5

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6

Which best explains how the body maintains homeostasis?

A
All systems work together to stabilize the body.
B
Each system works independently to stabilize the body.
C
All systems work together to match the external environment.
D
Each system works independently to match the external environment.
8

Which group contains only organs in a human body?

A
heart, brain, skin
B
skin, blood, neuron
C
neuron, heart, stomach
D
stomach, blood, brain
10

Which lists three living units of the human body in order from the simplest to the most complex level of organization?

A
red blood cell → circulatory system → blood
B
nervous system → nerves → brain
C
red blood cell → heart tissue → circulatory system
D
bone tissue → skeletal system → bone
11

Which group contains only organs in a human body?

A
heart, brain, skin
B
skin, blood, neuron
C
neuron, heart, stomach
D
stomach, blood, brain
12

Two views of a kidney.

Question illustration
A
organ
B
tissue
C
organ system
D
cell
13

When the body is cold, an interaction of systems allows the body to warm itself. Which of these help the body warm itself when it is cold? Check all that apply.

A
shivering
B
sweating
C
hair on body lying flat
D
goosebumps forming
E
hair on body standing up
14

Which conditions need to be in balance for cells to function? Check all that apply.

A
blood sugar
B
food intake
C
body water
D
body temperature
E
body mass
15

The esophagus, stomach, and small intestines all function together to digest food and absorb nutrients. Which level of organization is being described?

A
tissue
B
organism
C
organ
D
organ system
16

The hairs on Xander’s arms just started lying flat against his skin. Which is most likely his internal body temperature?

A
35°C, or 95°F
B
47°C, or 114.8°F
C
36°C, or 96.8°F
D
38°C, or 100.4°F
17

Which best explains how the body maintains homeostasis?

A
All systems work together to stabilize the body.
B
Each system works independently to stabilize the body.
C
All systems work together to match the external environment.
D
Each system works independently to match the external environment.

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