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BIO 112 WEEK 3 (2) PLA

Total questions: 28

Worksheet time: 21mins

Name
Class
Date
1.

What is gastric juice?

a)

Secretions released by your stomach

b)

Secretions released by your salivary glands

c)

Secretions released by your small intestine

2.

Enzyme that breaks down carbohydrates

a)

Amylase

b)

Pepsin

c)

Pepsinogen

d)

Hydrochloric acid

3.

The upper and lower esophageal (a)   control the entrance in/exit out of the esophagus.

4.

What is the name of the sphincter that divides the stomach and small intestine?

(a)  

5.

Which of the following are true of villi? (select all that apply)

a)

Found in stomach and small intestine

b)

Small, fingerlike projections

c)

Increase surface area

d)

Aid peristalsis

6.

Where does the majority of digestion occur?

a)

Mouth

b)

Stomach

c)

Small Intestine

d)

Large Intestine

7.

Involuntary muscle contractions that move food.

a)

Segmentation

b)

Flexion

c)

Swallowing

d)

Peristalsis

8.

also called the alimentary canal (choose all that apply)

a)

gastrointestinal tract

b)

intestines

c)

GI tract

d)

vessels

9.

Reorder the following. Put these in order that food follows as it passes through the digestive system.

a)

mouth

b)

esophagus

c)

stomach

d)

small intestine

e)

large intestine

1)
2)
3)
4)
5)
10.

Where would you expect to find acid?

a)
stomach
b)
small intestine
c)
liver
d)
large intestine
11.

Which is the esophagus?

a)

A

b)

B

c)

C

d)

D

e)

E

12.

Which parts of the diagram is the small and large intestine?

a)

A~ small intestine

E~ large intestine

b)

D~ small intestine

E~ large intestine

c)

C~ large intestine

B~ small intestine

d)

A~ large intestine

C~ small intestine

e)

E~ small intestine

D~ large intestine

13.

What is the sphincter between the esophagus and stomach?

a)

Pyloric sphincter

b)

Ileocecal sphincter

c)

Inferior esophageal sphincter

d)

Superior esophageal sphincter

14.

What are the contents in your stomach called after mechanical and chemical digestion?

a)

Bolus

b)

Chyme

c)

Food

d)

Feces

15.

What is gastric juice?

a)

Secretions released by your stomach

b)

Secretions released by your salivary glands

c)

Secretions released by your small intestine

16.

The two main types of complex sugars found in the diet are starch and ______.

a)

cellulose (fiber)

b)

glucose

c)

fructose

d)

sucrose

17.

Which of the following are digestible complex carbohydrates?

a)

starch

b)

cellulose

c)

fiber

18.

Which cell produces pepsinogen?

a)

chief cells

b)

parietal cells

c)

mucous cells

d)

enteroendocrine cells

19.

Which enzyme digest proteins in the stomach?

a)

amylase

b)

pepsin

c)

gastric lipase

d)

tyrpsin

20.

What is the role of HCl (Hydrochloric acid) in the stomach?

a)

to breakdown proteins

b)

to add moisture to the food

c)

to create an acidic environment to activate an enzyme

d)

to emulsify fats

21.
Pepsin is an enzyme that acts on
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
22.

What are these structures call that are found on the lining of the small intestine?

a)

Gallbladder

b)

Villi

c)

Sphincter

d)

Duodenum

23.

The duodenum, the jejunum, and the ileum are parts of which organ?

a)

large intestine

b)

liver

c)

stomach

d)

small intestine

24.

largest accessory for the digestive system

a)

liver

b)

pancreas

c)

kidney

d)

spleen

25.

What is the first section of the small intestine?

a)

Ilium

b)

Ileum

c)

Jejunum

d)

Duodenum

26.
As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCl), and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine?
a)
 It becomes inactive.
b)
It begins to replicate.
c)
 It's shape changes to engulf large proteins.
d)
It's activity increases to digest more proteins.
27.

What accessory organ releases bile salts into the small intestine?

a)

pancreas

b)

kidneys

c)

gall bladder

d)

spleen

28.

What is the role of bile salts in digestion?

a)

to emulsify fats

b)

to breakdown proteins

c)

to breakdown carbohydrates

d)

to neutralize the HCl (acid) from the stomach