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Large intestine
1. Chapter 10: Large intestine
A. Physiology
1. The amount of water which absorbed by
large intestine is
a- 1500 ml
b- 1300 ml
c- 200 ml
d- None of the above
2. Which of below digested in the large
intestine
a- Fats
b- Protein
c- Cellulose
d- None of the above
3. Which of the following function occurs in
the proximal colon
a- Defection
b- Storage
c- Absorption
d- Secretion
4. Which of the following function occurs
in the distal colon
a- Defection
b- Storage
c- Absorption
d- Secretion
5. Which of the following function occurs in
the anal canal
a- Defection
b- Storage
c- Absorption
d- Secretion
6. Which part in the large intestine secret
mucus
a- Proximal colon
b- Distal colon
c- Rectum
d- Iliocecal junction
7. Sympathetic stimulation of the large
intestine cause
a- Inhibition of the internal anal
sphincter
b- Inhibition to the muscles of enteric
colon
c- Excitatory to external anal sphincter
d- All of the above
8. Parasympathetic stimulation of the large
intestine cause
a- Inhibition of the internal anal
sphincter
b- Inhibition to the muscles of enteric
colon
c- Excitatory to external anal sphincter
d- All of the above
9. Somatic stimulation of the large intestine
cause
a- Inhibition of the internal anal
sphincter
b- Inhibition to the muscles of enteric
colon
c- Excitatory to external anal sphincter
d- None of the above
10. Which of the following are supplied by
vagi in the large intestine
a- Proximal colon
b- Distal colon
c- Anal canal
d- Internal anal sphincter
2. Answers
1- B
2- D
3- C
4- B
5- A
6- B
7- B
8- A
9- D
10- A
Essay
1- Mention physiological part of the large intestine and mention the function of each part
2- Mention the two regulating mechanisms in the secretion of mucus in the large intestine
3- What is the function of mucus in the large intestine
4- Give a short account about the defection
5- Enumerate the sympathetic & parasympathetic supply to the following parts of the large intestine:
a- Proximal colon
b- Distal colon
c- Internal anal sphincter
3. B. Histology
1. The functions of the goblet cells of the
large intestine
a- Absorption of water from digested
food
b- Lubricate intestinal mucosa
c- Production of serotonin
d- None of the above
2. The function of the epithelium of large
intestine
a- Absorption of water from digested
food
b- Lubricate intestinal mucosa
c- Production of serotonin
d- None of the above
3. The function of the enteroendrocrine cells
of the large intestine
a- Absorption of water from digested
food
b- Lubricate intestinal mucosa
c- Production of serotonin
d- None of the above
4. Crypts of lieberukhn of the lamina
propria of the large intestine show the
following except
a- Long & straight glands
b- Parallel to the musclaris mucosa
c- Packed with minimal connection
d- None of the above
5. Crypts of lieberukn of appendix show the
following except
a- Long & straight
b- Simple tubular glands
c- Widely separated from each other
d- None of the above
6. Taniae coli is fromed from
a- Incomplete outer circular layers of
musclosa
b- Incomplete inner circular layer of
musclosa
c- Complete inner longitudinal layer of
musclosa
d- Incomplete outer longitudinal layers
of musclosa
7. Which of the foolowing responsible for
convoluated appewarance of the external
wall of the large intestine
a- Appendics epiploicae
b- Taniae coli with fibrous tissue
c- Crypts of lieberukn
d- Sacculation of histra
8. Which of the following are sites of
appendics epiploicae
a- Inner surface of the large intestine
b- Musclosa of the large intestine
c- Outer surface of the large intestine
d- All of the above
9. All of the following described lamina
propria of the canal except
a- Contain plexus of veins
b- Circumaral glands
c- Loose CT
d- Long crypts
10. Which of the following forming external
anal sphincter
a- Inner circular muscle
b- Outer longitudinal muscle
c- Circumferential annulus
d- All of the above
4. 11. Which of those layers appears newly in
the gastro-esophageal junction
a- Mucus glands
b- Oblique smooth muscle fibers
c- Both A & B
d- None of the above
12. Which of the following forming brunner's
glands in the pyloro-duodenal junction
a- Intestinal crypts
b- Submucosal layers
c- Mucosal layers
d- Epithelial layer
Answers
1. B
2. A
3. C
4. B
5. A
6. D
7. B
8. C
9. D
10. C
11. B
12. B
Essay:
1- Identify this organ.
Mention the cells lining structure (1) and then discuss the
histological features of (2).
2- Discuss the mucosal structure of the appendix.
3- Identify the organ & mention its characteristic histological
features.
4- Discuss the mucosal structure of the anal canal.
5- Describe the structural changes at the gastro-esophageal
junction.
6- Describe the structural changes at the pyloro-
duodenal junction.
7- Describe the structural changes at the recto-anal
junction.
8- Identify this junction & mention 3 structural
changes.
