GENERAL HISTOLOGY

EPITHELIUM

EPITHELIAL TISSUES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the main functions of transitional epithelium?
A
blocks diffusion or osmosis, stretching
B
secretion and cilia-aided movement
C
filtration and stretching
D
absorption and filtration
Explanation: 

Detailed explanation-1: -The primary function of transitional epithelium is to enable tissue to contract and expand. For example, the inner walls of the urinary bladder are lined with transitional epithelium, a tissue which enables the bladder to enlarge when the bladder is filled with urine.

Detailed explanation-2: -The transitional epithelium cells stretch readily in order to accommodate fluctuation of volume of the liquid in an organ (the distal part of the urethra becomes non-keratinized stratified squamous epithelium in females; the part that lines the bottom of the tissue is called the basement membrane).

Detailed explanation-3: -Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

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