AnswersBiologyThe Human Body

The Human Body — Test Answers

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1
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Which is mixed with proteins to break them into amino acids?

A
saliva
B
fat
C
villi
D
enzymes
2
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Which level of organization is shown in the diagram?

A
organ system
B
tissue
C
cell
D
organ
3

Once the body has begun shivering, what happens to make it stop shivering?

A
When body temperature is below normal, the respiratory system sends a message to the muscular system to stop shivering.
B
When body temperature is below normal, the nervous system sends a message to the skeletal system to stop shivering.
C
When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering.
D
When body temperature returns to normal, the respiratory system sends a message to the skeletal system to stop shivering.
4

Which is the temporary storage tank for urine?

A
stomach
B
kidney
C
urethra
D
bladder
5

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

A
35 times degree C , or 95 times degree F
B
38 times degree C , or 100 point 4 times degree F
C
36 times degree C , or 96 point 8 times degree F
D
37 times degree C , or 98 point 6 times degree F
6

Which blood component makes up 41 percent of the blood’s volume?

A
platelets
B
plasma
C
red blood cells
D
white blood cells
7

Which is the proper order of structures that contact the substances removed from the blood?

A
nephron → urethra → bladder → ureter
B
urethra → bladder → ureter → nephron
C
nephron → ureter → bladder → urethra
D
urethra → ureter → bladder → nephron
8

The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs?

A
They help break down food.
B
They deliver nutrients to the other tissues.
C
They deliver oxygen to the blood.
D
They are both used for support.
9

The digestive system and the excretory system both excrete waste. Which best describes how waste is secreted in each system?

A
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.
B
Both systems excrete waste as a liquid.
C
Both systems excrete waste as a solid.
D
The digestive system excretes a liquid waste and the excretory system excretes a solid waste.
10

Veins take blood back to the heart. Which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart?

A
carbon dioxide
B
nitrogen
C
hydrogen
D
oxygen
12

Neurons and neuroglia work together to form nervous tissue, which is part of the nervous system. Which describes neurons and neuroglia?

A
They are cells that form tissue.
B
They are organs that form tissue.
C
They are specialized tissues that form an organ system.
D
They are specialized organs that form an organ system.
13

Which injury would likely cause the body to permanently lose the ability to perform simple reflexes?

A
the death of a single neuron in the body
B
damage to the nerve cells in the spinal cord
C
harm to a nerve in the skin
D
a muscle tear in the leg
14

When Brian touches a hot object, which body structures help him react appropriately to protect himself?

A
the sensory neurons, the brain, and the motor neurons
B
the sensory neurons, the vertebral column, and the brain
C
the vertebral column, the interneurons, and the motor neurons
D
the sensory neurons, the interneurons, and the motor neurons
15

Which product of respiration is considered waste material and leaves the alveoli?

A
carbon dioxide
B
water
C
oxygen
D
carbon monoxide
16

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. By changing the amount of water in the blood, blood pressure can change. The excretory system can help to lower blood pressure. Which would most likely occur in the kidney?

A
More water would be transferred from the nephron.
B
The amount of water in the blood would increase.
C
Less water would be absorbed into the nephron.
D
The amount of water in the bladder would decrease.
17

Lewis is exercising and his muscles need oxygen. Which best describes how systems interact to bring his body into homeostasis?

A
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the muscular system.
B
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the skeletal system.
C
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the muscular system.
D
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the skeletal system.
18

Question text not available

Answer:

Peristalsis

19

Which shows the best connection between the digestive and excretory systems?

A
The digestive system fuels the cells and the excretory system rids the body of the cells’ waste.
B
The digestive system rids the body of the cells’ waste and the excretory system fuels the cells.
C
The digestive system does physical digestion while the excretory system carries out chemical digestion.
D
The digestive system carries out chemical digestion while the excretory system does physical digestion.
20

Sound can be heard when air passes over a respiratory structure that is located between the pharynx and the trachea. Which structure is responsible for the voice?

A
the lung
B
the alveoli
C
the nose
D
the larynx
21

Which part of the autonomic system is most likely to be dominant while someone is napping after lunch?

A
the peripheral nervous system
B
the parasympathetic nervous system
C
the somatic nervous system
D
the sympathetic nervous system

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