Eyelids, Biology

EYELIDS -

  • 3 in number. Dermis is thinnest in it. Upper and lower eye lid with eye lashes. Upper eye lid is more motile
  • In reptiles lower eye lid is more motile. In cyclostomate, bonny fishes eye lids are absent.
  • In snakes eye lids are immovable. Third one is nictitating membrane which is thin & transparent.
  • In man it is vestigeal know as Plica seminularis. Nictitating membrane of sharks & frogs is prolongation of lower eye lid.
Posted Date: 10/3/2012 3:21:25 AM | Location : United States







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

Write discussion on Eyelids
Your posts are moderated
Related Questions
which was the first harmone discovered#

Cognitive - Behavioural Approaches They includepsychoeducatiorzal and rational-emotive  therapy. The goal is to identify problem behaviour and irrational beliefs and then to de

Trace the flow of blood through the systemic circuit (hepatic portal system) and the pulmonary circuit, beginning and ending in the left ventricle .  You will be using named chamb

What is Concentration Gradient? The graduated dissimilarity in concentration of a solute per unit - distance by a solution.

Actinomyces Members of the genus Actinomyces are facultative anerobic, gram-positive, non acid-fast, non-spore forming, nonhaemolytic rods. All Actinomyces require rich media

Cells are classified into eukaryotic or prokaryotic. Prokaryotic cell is that with no a delimited nucleus. Eukaryotic cells are those with nucleus delimited by membrane.

Q. Illustrate Omega Taxonomy? After synthesising a basic classification, the taxonomist can attempt to improve upon it. Therefore, the observed facts are interpreted in Omega t

Emergency Room Management Patient may needs incubation and ventilatory support till such time that patient is able to breathe normally. In some cases: patient is admini

Arterial Blood Gas Studies: Purpose 1)  A measurement of partial pressure of oxygen and carbon dioxide  in arterial blood, as well as the pH  of  the blood.  2) The Partial p

how many phylum does kingdom protista has?