Epithelial tissue, Biology

EPITHELIAL TISSUE OR EPITHELIA

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.

CLASSIFICATION OF EPITHELIAL TISSUE -

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
Determine the types of symbols used in Soil Horizons  Three kinds of symbols are used in various combinations to designate horizons. These are capital letters, lower case lett

How does the structure of a chloroplast enable it to build up a concentration gradient of protons?  Chloroplasts have an inner membrane system having of thylakoids. The pumpin

Q. Explain about types of Insulin? Three types of Insulin is available. The type varies in how quickly it starts working (lowering blood glucose), time of peak activity (when t

What are some examples of the control and informative function of organic molecules? Based on genetic information, organic molecules control the whole work of the cell. The nuc

Advantages of Stage two done with tissue punch - Less traumatic to surrounding tissue - Faster progress to the impression procedure - No sutures required

Explain Rifaximin Rifaximin (Xifaxan - Salix), a non-absorbed oral antibiotic derived from rifampin (Rifadin, and others), has been approved by the FDA for treatment of travele

The vertebral bodies are much larger in the lower back than the neck. What is the functional significance of this structural difference?

How are lipids used as an energy source by the organism? Carbohydrates are the major energy source for aerobic cell respiration. In the absence or deficiency of such substances

Q. Show Coding for stimulus intensity? Coding for stimulus intensity: If AP's are all-or-none responses that do not vary in amplitude, how does the NS distinguish between stim

Which of the following best explains mechanisms by which histones interact with DNA? A. Histone core proteins interact with the main groove of DNA by the helix-turn-helix-turn