Canada provinces number 10, with three territories to the north (Yukon, Northwest Territories and Nunavut).he following is a list of the 10 provinces in Canada, from west to east, followed by the territories. Major Cities & Towns: Victoria (provincial capital), Vancouver, Whistler, Kelowna.
Ptosis is a drooping or sagging of the upper eyelid, which may affect one eye or both. Ptosis is the medical name given to the condition of droopy eyelids. It is most common in older people, although it can occur as a congenital or birth defect, or as a result of an eye injury or disease.
Ptosis is the lagging of an eyelid. It has 2 distinct etiologies. Sympathetics going to the eye innervate Muller's muscle, a small muscle that elevates the eyelid. The III cranial nerve also innervates a much larger muscle that elevates the eye lid: the levator palpebrae. Thus, disruption of either will cause ptosis. The ptosis from a III nerve palsy is of greater severity than the ptosis due to a lesion of the sympathetic pathway, due to the size of the muscles innervated.