CHOSE ,TE BEST ANswER pithelial tissues are derivatives of the following embryon

Question

CHOSE ,TE BEST ANswER pithelial tissues are derivatives of the following embryonic gerin layer a. endoderm b. ectoderm c. mesoderm d. endoderm and mesoderm e. none of the above ch of the following is not a function of the epithelial tissues? a, protection b· lubrication ahenrption d. reproduction e. production of glycogen 3 Epithelial tissues are avascular a· true b. false 4 Which of the following shapes is not found in epithelial tissues? a. squamous b. cubiodal c, columnar d transitional e. endothelium Stratified squamous epithelium could be found in a. skin b, vagina c. tongue d. urinary bladder e. only d is wrong

Explanation / Answer

1) Epithelial tissues are derived from all of the embryological germ layers

Ectoderm (lining of epidermis)

Endoderm (lining of gastrointestinal tract)

Mesoderm (inner lining of body activities).

So the answer is (e) none of the above.

2) Epithelial tissues have all functions (protection, absorbtion, lubrication and reproduction) other than production of glycogen. So the answer is (e)

3) Most Epithelial tissues are avascular (lack blood vessels), so the answer is true.

4) Epithelial tissue shapes are squamous, cuboidal, columnar, and transitional, So the answer is (e)

5) Stratified squamous epithelium found in skin, vagina, and toungue, other than urinary bladder. So the answer is (e)

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