Eyelids, Biology

Assignment Help:

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.

Related Discussions:- Eyelids

Long lasting vaccine against common cold, Q. Why does not a long lasting va...

Q. Why does not a long lasting vaccine against common cold exist yet? Viruses that present a high mutation rate like the virus that causes the common cold escape easily from th

Genome, Genome is the whole compliment of genetic material in the form of ...

Genome is the whole compliment of genetic material in the form of the permanently maintained DNA for the particular given organism. Its size is usually given as its total number o

Explain fixed-dose combination of tuberculosis, Fixed-Dose Combinations  ...

Fixed-Dose Combinations  A combination formulation of rifampin, isoniazid and pyrazinamide (Rifater) is approved by the FDA for the initial 2 months of daily anti-tuberculosis

Draw a graph for an iv multiple infusion of a drug, Draw A graph for an IV ...

Draw A graph for an IV multiple infusion of a drug, and label on the graph where the trough (predose) blood draw would be collected and where the peak (postdose) blood draw would b

Explain technologicai advances of clinical dietitian, Explain TechnologicaI...

Explain TechnologicaI advances of clinical dietitian TechnologicaI advances in nutritional  support for the critically ill have enhanced the clinical dietitian's role. In the

Foetal maceration and mummification, Foetal maceration and mummification ...

Foetal maceration and mummification Foetal mummification occurs when the foetus dies in the uterus in the absence of air and bacterial contamination and the cervix remains tig

Explain continuous murmurs and their characterstic, Explain Continuous Murm...

Explain Continuous Murmurs and their characterstic in details? These murmurs are continuous throughout systole and diastole. It is due to continuous blood flow in the same dire

Skeleton, what are the biological significance of the skeleton?

what are the biological significance of the skeleton?

Define anaerobic exercise or energy system, Define Anaerobic Exercise or En...

Define Anaerobic Exercise or Energy System? Thus, exercises which are done for short bursts of time lasting only for few seconds (less than 120 sec) use only anaerobic system o

Explain about the folate, Explain about the Folate? Folate is a generic...

Explain about the Folate? Folate is a generic term which includes naturally occurring food folate and folic acid in supplements and fortified foods. Pteroyl monoglutamic acid a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd