Tissue and Histology-Epithelial

Question 1

how is Tissue classified?

Answer 1

Tissue classification based on structure
of cells, composition of non-cellular
extracellular matrix, and cell function

Question 2

what is Epithelial tissue?

Answer 2

Consists almost entirely of cells

Covers body surfaces and forms glands

Question 3

where does Epithelial tissue cover?

Answer 3

◦ Outside surface of the body
◦ Lining of digestive, respiratory and urogenital systems
◦ Heart and blood vessels
◦ Linings of many body cavities

Question 4

what does Epithelial tissue have?

Answer 4

 Has free, basal, and lateral surfaces
 Basement membrane
 Specialized cell contacts

Question 5

What is Epithelial tissue without?

Answer 5

blood(avascular)

Question 6

what can Epithelial tissue do?

Answer 6

Regenerate

Question 7

what are the characteristics of Epithelial tissue?

Answer 7

. Epithelial cells have little extracellular matrix
. Nucleus
. Basement membrane

Question 8

what are the functions of Epithelial tissue?

Answer 8

1. Protecting underlying structures
2. Acting as barriers
3. Permitting the passage of substances (one cell thick, permeable membrane)
4. Secreting substances
5. Absorbing substances

Question 9

what is the extracellular matrix?

Answer 9

the extracellular matrix (ECM) is a three-dimensional network of extracellular macromolecules that provide structural and biochemical support to surrounding cells.