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exam 5 review

Total questions: 57

Worksheet time: 29mins

Name
Class
Date
1.

during the intestinal phase:

a)

a decrease in chyme in the duodenum inhibits gastric juice secretion and movement of chyme into the duodenum

b)

food enters the colon

c)

food enters the stomach

d)

an increase in chyme in the duodenum stimulate gastric judice secretion and movement of chyme into the duodenum

e)

An increase in chyme in the duodenum inhibits gastric juice secretion and movement of chyme into the duodenum

2.

Food is prevented from entering the nasal cavity during swallowing by the

a)

tongue

b)

palatine tonsils

c)

epiglottis

d)

soft palate and uvula

3.

functions of the liver include:

a)

interconversion of nutrients

b)

detoxification of harmful chemicals

c)

all of these listed choices are correct

d)

bile production

e)

production of many blood proteins

4.

Inability of the pyloric sphincter to open would prevent

a)

chyme from entering the small intestine

b)

stomach acid from being released

c)

digestive enzymes from being released

d)

food from entering the stomach

e)

the making of chyme

5.

insulin is released from the

a)

spleen

b)

duodenum

c)

liver

d)

none of these listed is correct

e)

gall bladder

6.

insulin is released from the

a)

spleen

b)

duodenum

c)

liver

d)

none of these listed is correct

e)

gall bladder

7.

In the presence of acidic chyme in the duodenum, the duodenum will secrete _____ which will stimulate the ___ to produce secretions high in ___

a)

secretin; pancreas and liver; bicarbonate

b)

secretion; duodenum; bicarbonate

c)

cholecystokinin, pancreas, and gallbladder; bicarbonate

d)

gastric, stomach, H+

8.

Of the five types of secretory cells in the gastric cells in the gastric glands, which type secrete HCI?

a)

mucous neck cells

b)

chief cells

c)

surface mucous cells

d)

enteroendocrine cells

e)

parietal cells

9.

Pancreatic juice contains water, enzymes, and

a)

mucin

b)

insulin

c)

hydrochloric acid

d)

none of the listed choices are correct

e)

bicarbonate

10.

Pepsin digests

a)

nucleic acids

b)

all polymers

c)

lipids

d)

carbonhydrates

e)

proteins

11.

Peristalsis

a)

prevents backflow

b)

results in making of food with other substances

c)

is mainly present in the large intestine

d)

are waves of contractions that move substances

12.

Carbohydrates are made out of:

a)

complete carbs

b)

glycerol and fatty acids

c)

none of the listed options are true

d)

monosaccharides

e)

amino acids

13.

The function of intrinsic factor is to

a)

stimulate gastric juice secretion in the stomach

b)

convert pepsinogen into pepin

c)

absorption of vitamin B12 for erythrocyte production

d)

stimulate bile release from the gallbladder

14.

what is the only necessary life function of the stomach?

a)

production of intrinsic factor

b)

food storage

c)

nutrient absorption

d)

chemical digestion of lipids

15.

reflex of gastric contents into the esophagus occurs because of

a)

increased hydrochloric acid production by the g cells

b)

spasms of the mucosal layer of the stomach wall

c)

relaxation of the cardiac sphincter

d)

increased amounts of mucous produced by the stomach

e)

contraction of the pyloric sphincter

16.

Secretions that are added as food moves through the GI tract assist in

a)

distribution of nutrients throughout the body

b)

insulin production

c)

chemical digestion of food

d)

bile production

e)

vitamin A and D production and storage

17.

Teniae coli are thin bundles of smooth muscle that bunch up the large intestine into sacs called:

a)

none of the above

b)

haustra

c)

gastric folds

d)

omenta

e)

colonic columns

18.

The back and forward motion of the small intestine that mixes chyme with secretions is called:

a)

ileostation

b)

none of the listen choices is correct

c)

segmentation

d)

peristalsis

e)

compaction

19.

The cephalic phase of digestion occurs:

a)

when food has entered the rectum

b)

when food has entered the large intestines

c)

none of the listed choices is correct

d)

when food has entered the small intestines

e)

when food has entered the stomach

20.

The enteric nervous system

a)

coordinates peristalsis and regulates local reflexes

b)

does not coordinate with the sympathetic and parasympathetic nervous systems

c)

consists of the sympathetic and parasympathetic nervous system

d)

produces hormones such as gastrin

21.

The four segments of the colon are (in order)

a)

descending, ascending, sigmoid, transverse

b)

none of the above

c)

transverse, ascending, descending, sigmoid

d)

ascending, transverse, descending, sigmoid

e)

sigmoid, transverse, ascending, descending

22.

The gallbladder empties into the

a)

duodenum

b)

cecum

c)

stomach

d)

ileum

e)

jejunum

23.

the hepatic portal vein transports blood directly from the ___ to the ____

a)

pancreas, spleen

b)

liver, vena cava

c)

aorta, GI tract

d)

Liver, spleen

e)

GI tract, liver

24.

The lining of the gastrointestinal tract that allows for absorption and secretion is:

a)

nonkeratinized stratified squamous epithelium

b)

transitional epithelium

c)

simple columnar epthelium

d)

reticular

e)

simple squamous epithelium

25.

the liver has how many lobes?

a)

2

b)

3

c)

4

d)

5

e)

1

26.

the segments of the small intestine are (in order):

a)

cecum, colon, rectum

b)

fundus, body, pylorus

c)

duodenum, jejunum, ileum

d)

ileum, duodenum, jejunum

27.

The stomach functions to

a)

emulsify fats

b)

absorb most nutrients

c)

chemically digest all macromolecules

d)

hold digested food to slow the movement of food through the GI tract

28.

The villi, microvilli and circular fold (plicae circularis) function to

a)

promote peristalsis

b)

produce bile

c)

stimulate chemical digestion

d)

liberate hormones

e)

increase surface area for absorption

29.

what accessory digestive organ(s) add secretions to the duodenum?

a)

stomach

b)

spleen

c)

jejunum

d)

pancreas

30.

what is a major function of stomach acid (hydrochloric acid)?

a)

chemical digestion of carbohydrates

b)

chemical digestion of lipids

c)

kill most microorganisms

d)

neutralize bicarbonate found in saliva

e)

chemical digestion of proteins

31.

where are hepatocytes located?

a)

blood

b)

pancrease

c)

none of the listed choices is correct

d)

liver

e)

stomach

32.

which is not a function of the digestive system?

a)

elimination

b)

ingestion

c)

these are all functions of the digestive system

d)

digestion

e)

secretion

33.

which layer of the digestive tract is in direct contact with the food consumed?

a)

muscularis

b)

submucosa

c)

peritoneum

d)

mucosa

e)

serosa

34.

which method of mobility just propels ingested material along the GI tract (as occurs in the esophagus)?

a)

none of the above

b)

cephalization

c)

elastic contraction

d)

peristalsis

e)

fenestration

35.

which of the following organs is part of the digestive tract or alimentary canal?

a)

liver

b)

gallbladder

c)

teeth

d)

salivary gland

e)

stomach

36.

which of the following is not an upper GI tract organ?

a)

oral cavity

b)

all of these listed choices are correct

c)

esophagus

d)

stomach

e)

jejunum

37.

which of the following would stimulate gastric secretions?

a)

cholecystokinin

b)

secretin

c)

gastrin

d)

acidic chyme in duodenum

e)

pepin

38.

which of the following is not a function of the small intestine?

a)

mechanical digestion

b)

all of the options are functions of the small intestine

c)

absorption

d)

chemical digestion

39.

which of the following is not part of a portal triad?

a)

hepatopancreatic sinusoids

b)

all of the above are part of a portal triad

c)

hepatic artery

d)

bile ductule

e)

hepatic portal vein

40.

which of the following structures has both endocrine and exocrine tissue?

a)

colors

b)

pancreas

c)

gallbladder

d)

spleen

e)

liver

41.

which of the following statements concerning carbohydrates is not true?

a)

carbohydrates start chemical digestion in the mouth

b)

none of the options are true

c)

carbohydrates have to be absorbed along with dietary tract

d)

carbohydrates are chains of monosaccharides

e)

carbohydrate

42.

which organ is an accessory organ?

a)

pancreas

b)

none of the above

c)

esophagus

d)

stomach

e)

colon

43.

which organ produces enzymes that digest all four macromolecules?

a)

gall bladder

b)

pancreas

c)

small intestine

d)

stomach

e)

liver

44.

which valve separates the small from the large intestine?

a)

duodenalrectal

b)

pyloric

c)

colonic

d)

none

e)

ileocecal

45.

why doesn't the acid in the stomach damage the walls of the stomach?

a)

the stomach is protected by HCl

b)

the digestive enzymes in the stomach aren't efficent enough

c)

the stomach wall lacks proteins so enzymes wont attackit

d)

the stomach wall is protected by large amounts of mucus

46.

when the body breaks down the peptide bonds of proteins, which monomers are formed?

a)

ATP

b)

nucleotide

c)

amino acid

d)

monosaccharide

e)

C6H12O6

47.

which of the following is a monomer?

a)

collagen

b)

nucleic acid

c)

glucose

d)

starch

48.

glycogen is a polymer of which monomer?

a)

glucose

b)

fructose

c)

protein

d)

nucleotide

e)

starch

49.

nutrients that are absorbed in the small intestine, such as glucose, are then sent to which organ to processed?

a)

adrenal medulla

b)

liver

c)

mesentery

d)

cecum

e)

large intestine

50.

where does the chemical digestion of carbohydrates begin?

a)

small intestine

b)

oral cavity

c)

large intestine

d)

stomach

51.

what is the brush border?

a)

The microvilli along the intestinal villi

b)

the lining of the stomach

c)

the outer curvature of the stomach

d)

another name of the mesentery

52.

bile is used for which of the following?

a)

mechanical digestion of lipids

b)

chemical digestion of all the biological macromolecules

c)

chemical digestion of the biological macromolecules

d)

mechanical digestion of proteins

53.

which type of vitamin must be taken from the diet and cannot be made by the body?

a)

essential vitamins

b)

nonessential vitamins

54.

which of the following best describes a mineral?

a)

organic molecules required for normal metabolism

b)

essential inorganic ion obtained from the diet

55.

which of the following is an example of a mineral?

a)

glucose

b)

B12

c)

DNA

d)

calcium

56.

water is a nutrient

a)

true

b)

false

57.

where does the majority of nutrient absorption take place?

a)

pancreas

b)

small intestine

c)

stomach

d)

oral cavity

e)

large intestine

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