Digestion 1

Question 1

serous membranes of the digestive system:

Line the abdominal organs:

Answer 1

visceral peritoneum

Question 2

serous membranes of the digestive system:

Between the organs and abdominal wall:

Answer 2

mesenteries

Question 3

serous membranes of the digestive system:

Line the abdominal wall:

Answer 3

parietal peritoneum

Question 4

What are the 4 layers to a hollow organ:

Deepest –>[a], [b], [c], [d]

Answer 4

[a] Mucosa
[b] Sub-mucosa
[c] Muscularis Externa
[d] Serosa

Question 5

Which of the following are the 2 major types of motion generated by smooth muscle tissue of the GI tract:

Answer 5

segmentation

peristalsis

Question 6

The major enzyme made by the salivary glands is called salivary _______.

The major function of this enzyme is:

Answer 6

amylase

destruction of bacterial cell walls

Question 7

Which of the salivary glands produces the most saliva?

Answer 7

submandubular

Question 8

What type(s) of muscle line the esophagus?

Answer 8

skeletal

smooth

Question 9

Based off of what you learned about the role of histamines in the stomach, predict what what will happen when a patient takes an anti-histamine:

Stomach acid production: [a]
Pepsin activity: [b]
Amount of time food would spend in the stomach: [c]

Answer 9

[a] lower
[b] lower
[c] higher

Question 10

What is the dental formula, by type: (in one quadrant)

incisors: [a]
canines: [b]
premolars: [c]
molars: [d]

Answer 10

incisors: [a] 2
canines: [b] 1
premolars: [c] 2
molars: [d] 3

Question 11

Order the phases of gastric activity, and whether gastric activity is increased or decreased:

1st phase 
2nd phase 
3rd phase 
 cephalic
 increased
2nd
 gastric
 increased
3rd
 intestinal
 decreased

Answer 11

1st phase cephalic increased
2nd phase gastric increased
3rd phase intestinal decreased

Question 12

The ____ sphincter regulates the movement of chyme into the duodenum.

Answer 12

pyloric

Question 13

Identify the regions of the intestines, in order:

Stomach
Small intestines: [a], [b], [c]
Large intestines: [d], [e], [f], [g], [h]
Rectum

Answer 13

[a] duodenum
[b] jejunum
[c] ileum

Question 14

Identify the regions of the intestines, in order:

Stomach
Small intestines: [a], [b], [c]
Large intestines: [d], [e], [f], [g], [h]
Rectum

Answer 14

[d] cecum
[e] ascending colon
[f] transverse colon
[g] descending colon
[h] sigmoid colon

Question 15

Fat-laden chyme pass through the stomach slower or faster?

Answer 15

slower

Question 16

What percentage of nutrient absorption happens in the small intestines?

Answer 16

90%

Question 17

The brush border lies on the apical surface of intestinal epithelial cells, and is composed of these sub- cellular structures: [a]

Answer 17

microvilli

Question 18

Those sub-cellular structures mainly function to increase [b].

Answer 18

surface area.

Question 19

The epithelial cells are, in turn, arranged into finger-like projections called [c].

Answer 19

villi.

Question 20

Inside each one of those are blood vessels plus a lymphatic vessel known as a [d].

Answer 20

lacteal.