NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANIMAL TISSUES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How can epithelial tissue be described?
A
Forms glands
B
Contains mostly extracellular matrix
C
Forms membranes
D
Both A and C
Explanation: 

Detailed explanation-1: -The epithelium is a type of body tissue that forms the covering on all internal and external surfaces of your body, lines body cavities and hollow organs and is the major tissue in glands.

Detailed explanation-2: -Based on the shape of cells, epithelial tissues have three types of cells: they are squamous, cuboidal, and columnar.

Detailed explanation-3: -Epithelial cells have two different “sides”-apical and basolateral. The apical side always faces out of the body (outside or into a lumen). There is a small amount, or an absence of, extracellular matrix. They are avascular (meaning, they don’t have blood vessels) and get their nutrients via diffusion.

Detailed explanation-4: -Epithelial tissues are classified according to the shape of the cells and number of the cell layers formed ([link]). Cell shapes can be squamous (flattened and thin), cuboidal (boxy, as wide as it is tall), or columnar (rectangular, taller than it is wide).

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