Epithelial tissue, Biology


Epithelium term coined by Ruysh, it was applied originally to thin skin covering the nipple. (G.epi = upon, thele = nipple)

Epithelial tissues evolved first and are also formed first in the embryo.

  • Epidermis of the skin from the ectoderm.
  • Coelomic epithelium from the mesoderm.
  • Epithelial lining of alimentary canal (= gut) from the endoderm.

Epithelial cells rest upon nonecellular Basal lamina or Basement membrane, but in transitional epithelium, basal lamina is absent.

Blood vessels and lymph vessels are absent in epithelial tissues.

The epithelial tissues have a good power of repair (regeneration) after injury.


807_epethelial tissue classification.png

Posted Date: 10/1/2012 2:17:09 AM | Location : United States

Related Discussions:- Epithelial tissue, Assignment Help, Ask Question on Epithelial tissue, Get Answer, Expert's Help, Epithelial tissue Discussions

Write discussion on Epithelial tissue
Your posts are moderated
Related Questions
Q. Managing diarrhoea in children? Managing diarrhoea in children is of great concern. The guidelines for the same are as follows: 1. The first objective is to rehydrate the

Plot the data as a suitable graph. Join the points with the best-fitting smooth curve.Temperature oC(5,10,11,13,17,19) Time taken for eggs to hatch/h 230 90 70 30 25

Provide a link to the graph, describe the variables, and interpret the meaning of the graph

Explain the Spectrophotometer or Colorimete? These can be used to measure the microbial growth or can be used in various microbial and biochemical assays. Figure illustrates t

The vascular tone increases as the arterial size decreases. The tone at any time reflects the effects of excitory and inhibitory pathways. Neurotransmitters, physical forces like s

If a plant of genotype A/a is selfed, and numerous offsprings are scored, what proportion of the progeny is expected to have homozygous genotypes?

Blunt Injury Closed penumothorax  Tension pneumothorax  Tracheobronchial injury  Fracture ribs and flail chest  Mediastinal injury

Q. Whcih group of individual animals and plants called Species? A group of individual plants and animals that are fundamentally alike is treated as a ,species. Species is a par

Explain Skin changes During Kwashiorkor? In many cases, dermatosis (changes in skin) is seen. Such changes are common in areas of friction. Dark pigmented patches, akin to sun-

A species has a diploid chromosome number of 56, WHY is it true that of the 28 chromosomes in an ovum, 14 are always paternal?