AnswersSummer School LA-Biology CRThe Musculoskeletal and Integumentary Systems

The Digestive and Excretory Systems Answers

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1
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Which best describes the physical and chemical digestion of food?

A
Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine.
B
Physical and chemicall digestion occur in the small intestine; only chemical digestion occurs in the mouth.
C
Only physical digestion occurs in the stomach; chemical and physical digestion occur in the large intestine.
D
Only physical digestion occurs in the large intestine; physical and chemical digestion occur in the stomach.
2
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Which are structures of the excretory system? Select four options.kidneyspleenbladderesophagusureterurethra

A
kidney
B
spleen
C
bladder
D
esophagus
E
ureter
F
urethra
3

The picture represents the excretory system.

Question illustration
A
nephron
B
ureter
C
bladder
D
urethra
4

In which part of the digestive system does a chemical change of the food first occur?

A
mouth
B
esophagus
C
stomach
D
liver
5

The diagram shows a nephron.

Question illustration
A
W
B
X
C
Y
D
Z
6

Which statement best describes the breakdown of food in the digestive system?

A
Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach.
B
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.
C
Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine.
D
Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.
7

Which plays both a role in physical and chemical digestion?

A
teeth
B
saliva
C
gall bladder
D
villi
8

Which occurs during digestion?

A
The mouth only allows for physical digestion.
B
The mouth only allows for chemical digestion.
C
Chemical digestion prepares the food for physical digestion.
D
Physical digestion prepares the food for chemical digestion.
9

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

A
nephron → urethra → bladder → ureter
B
urethra → ureter → bladder → nephron
C
nephron → ureter → bladder → urethra
D
urethra → bladder → ureter → nephron
10

Once the teeth start grinding food, is produced to make food moist and slippery.

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