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

Define titrimetric method - 2, Define Titrimetric Method - 2, 6 Dichlorophe...

Define Titrimetric Method - 2, 6 Dichlorophenol Indophenol Method? The titrimetric method is a redox titration method which depends on the reduction of the blue dye 2,6 dichlor

What are the disadvantages of ridgemapping, Disadvantages of Ridgemapping ...

Disadvantages of Ridgemapping  a) Traumatic procedure b) Time consuming procedure and needs more armamentarium c)  There is an inherent risk of inaccuracy especially whil

Normal pattern reappears, During the course of a physiology laboratory, a s...

During the course of a physiology laboratory, a student finds that her PR interval is 0.24 second. Concerned, she takes her own ECG again an hour later and sees an area of the ECG

Explain keshan disease caused by selenium deficiency, Explain Keshan diseas...

Explain Keshan disease caused by Selenium deficiency? It is a cardiomyopathy (disease of the myocardium, involving heart muscle) that was identified to affect children and wome

Difference, 1:What is the difference between TERGA and STERNA? 2:What is th...

1:What is the difference between TERGA and STERNA? 2:What is the difference between AMPHID and PHASMID?

Similarities between chlorplasts and prokaryotic cells, What are the simila...

What are the similarities between chlorplasts and prokaryotic cells?

Buffers in foods, Some foods are better able to resist changes in pH than...

Some foods are better able to resist changes in pH than others. These tend to resist changes in pH since these are buffered and the ability to resist changes in pH is known as bu

Respiration in cockroach, what is the chemical reaction of respiration in c...

what is the chemical reaction of respiration in cockroach?

The nurse''s role in relieving the child''s stress, The Nurse's Role  in ...

The Nurse's Role  in Relieving  the Child's Stres s Turning passive experiences into active ones that facilitate the child's healthy - Problems-I  adjustment to hospitalization

Define water output (losses of body water) - renal loss, Define Water Outpu...

Define Water Output (Losses of body water) - Renal loss? Water is lost from the body by the four routes, namely kidneys (renal system), skin, lungs and intestine. Let us discus

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