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الجمعة، 13 نوفمبر 2015

mcq on epithelium


1. The epithelium is characterized by the following EXCEPT:
a. it has high power of regeneration.
b. It consists of cells mainly with minimal spaces.
c. It covers surfaces & line cavities.
d. Clear or non clear basement membrane.
e. Lack nerve supply.
ANS: E
2. The following statements concerning epithelium are true EXCEPT:
a. it is penetrated by blood & lymph vessels.
b. their surface may show modifications.
c. its cells rest on basement membrane.
d. it has a high power of regeneration.
e. Minimal intercellular space.
ANS: A
3. One of the following characteristics is true about epithelium
a. contains large amounts of intercellular substance.
b. penetrated by blood & lymph vessels.
c. separated from c.t. by basement membrane.
d. do not have a high power of regeneration.
e. Nerves cannot penetrate it.
ANS: C
4. Criteria used to classify epithelium include all of the following EXCEPT:
a. Number of layers
b. shape of the basal cells
c. presence or absence of cilia.
d. shape of the superficial cells.
e. Presence or absence of goblet cells.
ANS: B
5. Simple squamous epithelium can be found in all of the following EXCEPT
a. lung alveoli
b. the pleura
c. blood vessels
d. gall bladder
e. Bowman's capsule.
ANS: D
6. Endothelium is the lining epithelium of :
a. Pleura
b. Alveoli
c. Bowman's capsule.
d. Serous membranes.
e. Blood vessels.
ANS: E
7. Mesothelium is the lining epithelium of:
a. lung alveoli.
b. blood vessels.
c. thyroid follicle.
d. pleura.
e. Fallopian tube.
ANS: D
8. The following statement is true regarding simple squamous epithelium:
a. it's penetrated by blood vessels.
b. it's formed of many layers of cells.
c. it lines the intestinal mucosa.
d. Lines thyroid follicles.
e. it forms the mesothelium of serous membranes
ANS: E
9. Simple squamous epithelium lines all the following EXCEPT
a. proximal convoluted tubules.
b. Bowman's capsule of the kidney.
c. the alveoli of the lungs.
d. lymphatic capillaries.
e. blood vessels
ANS: A
10. Simple squamous epithelium is present in all of the following sites EXCEPT:
a. lung alveoli
b. blood vessels
c. small intestine
d. Bowman's capsule of the kidney
e. Pleura.
ANS: C
11. All the following structures are lined with simple squamous epithelium EXCEPT;
a. aorta
b. thyroid gland
c. pericardium
d. alveoli of the lung
e. Bowman's capsule.
ANS: B
12. One statement is true about simple squamous epithelium:
a. lines the convoluted tubules of kidney.
b. lines the endothelium of bood vessels.
c. formed of many layers of cells resting on basement membrane.
d. penetrated by blood vessels.
e. present in kidney tubules.
ANS: B
13. In absorbing cubical cell, the brush border seen by L/M is
a. cilia
b. flagella
c. microvilli
d. sterocilia
e. desmosomes.
ANS: C
14. Simple cubical epithelium is found in
a. thyroid follicles
b. gall bladder
c. lung alveoli
d. urinary bladder
e. trachea.
ANS: A
15. The epithelium lining the digestive tract is derived from:
a. ectoderm
b. mesoderm
c. endoderm
d. epidermis.
e. hypodermis
ANS: C
16. The functions of simple columnar epithelium is / are
a. secretory
b. absorptive
c. easy filtration
d. reabsorption
e. Secretory and absorptive
ANS: E
17. Pseudo-stratified columnar ciliated epithelium can be found in
a. the ovary
b. the blood vessels
c. upper respiratory passages
d. urinary passage
e. lung bronchioles
ANS: C
18. One statement about pseudostratified columnar ciliated epithelium is true:
a. may be keratinized
b. is highly vascular
c. all cells resting on a basement membrane
d. it is a type of sratified epithelium
e. all cells are tall columnar cells
ANS: C
19. Simple columnar ciliated epithelium is found in:
a. intestinal absorptive cells.
b. fallopian tube
c. gastric secretory cells.
d. trachea.
e. nose.
ANS: B
20. The following statement is true regarding stratified squamous epithelium.
a. the superficial layer of cells always Keratinized.
b. it lines the wall of the oesophagus.
c. its most superficial layer of cells is cuboidal cells.
d. the intercellular spaces contain mucoid like substance.
e. it lacks basement membrane.
ANS: B
21. Each of the following statements concerning stratified squamous epithelium is true EXCEPT:
a. cells connected by desmosomes
b. can be keratinized
c. found in oesophagus
d. all its cells rest on the basement membrane.
e. 5 – 30 layers.
ANS: D
22. Transitional epithelium is characterized by:
a. well-defined basement membrane
b. cells connected together by occludens zones
c. cells connected together by desmosomes.
d. may reach upto 30 layers in empty urinary bladder.
e. cells separated by mucous like substance
ANS: E
23. The following statement is true about transitional epithelium
a. the basement membrane is clear.
b. the superficial cells are columnar
c. it consists of one layer of cells
d. the intercellular space contains mucoid like substance to allow glinding of cells over each other.
e. the basal cells are flat.
ANS: D
24. One statement about transitional epithelium is True
a. associated with the respiratory tract.
b. Represent a transitional tissues between stratified squamous and stratified columnar epithelium.
c. has sterocilia as a surface modification
d. have clear basement membrane
e. the upper most layer have binucleated cells.
ANS: E
25. One of the following organs is lined with transitional epithelium:
a. uterus
b. urinary bladder
c. vas deferens
d. gall bladder
e. intestine
ANS: B
26. Urinary bladder is lined with:
a. pseudostratified columnar epithelium
b. stratified columnar epithelium
c. stratified squamous epithelium
d. transitional epithelium
e. simple cubical epithelium.
ANS: D
27. All the following sites are lined with transitional epithelium EXCEPT:
a. renal pelvis
b. ureter
c. uterus
d. urinary bladder
e. prostatic urethra.
ANS: C
28. Transitional epithelium is found in
a. urinary bladder
b. gall bladder
c. uterus
d. proximal convoluted tubules
e. trachea
ANS: A
29. One statement about transitional epithelium is True
a. lining the gall bladder
b. has no basement membrane.
c. contain mucous-like intercellular substance.
d. may be keratinized or non keratinized.
e. superficial cells are flat.
ANS: C

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