What Is 'Semantic Bleaching'? How 'literally' can mean "figuratively". Literally How to use a word that literally drives some pe Is Singular 'They' a Better Choice? The awkward case of 'his or her'. Take the quiz. Our Favorite New Words How many do you know? How to use canthus in a sentence An incision is made outwards and slightly upwards from the canthus.
Derived forms of canthus canthal , adjective. The angle formed by the meeting of the upper and lower eyelids at either side of the eye.
Can also be damaged by nasal trauma or chronic nasal mucosal disease. Lateral canthus: the lateral confluence of upper and lower eyelid margins. Sclera: the collagenous outer wall of the eyeball.
Its outermost portion, called the episclera, has a rich vascular network. It is here that bilirubin accumulates to stain the superficial sclera yellow "icterus".
The sclera becomes inflamed in connective tissue diseases, usually forming a nodule with a tangle of hyperemic episcleral and conjunctival vessels. The episclera is covered by the conjunctiva, a vascular mucous membrane. Iris: the diaphragm that controls the amount of light entering the eye. It has two layers, a posterior pigment epithelium and an anterior stroma made of collagen, muscle and pigment cells.
The more pigment in these stromal cells, the darker the iris. Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc.. Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..
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