Gross Anatomy: Cranial Meninges, Dural Venous Sinuses and Cerebrospinal Fluid

Description of Keratoacanthoma

This raised skin lesion with a central necrotic area has the appearances of a keratoacanthoma. The natural history of these lesions is that, if untreated, they rapidly increase in size over several weeks up to a maximum diameter of 3-4 cm. They then have a plateau phase and eventually regress over several months, leaving ...........

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Basic Structure of the Nephron

Clinical Complications of Tracheostomy

Horner's Syndrome pic

Horner's Syndrome is a syndrome caused by a lesion in the sympathetic nervous system, especially the cervical chain or central pathways, and characterized by drooping upper eyelid(ptosis), pupillary contraction(miosis), absence of sweating(anhydrosis), and receding eyeball


Loss of sympathetic nervous system input to (in this case) right eye.

Note that right pupil is smaller than left. Also that right eyelid covers a greater portion of eye than on left
(known as ptosis). The etiology in this case was due to tumor infiltrating the sympathetic chain.

TRACHEOSTOMY,How to do!!

A VIDEO OF THE SURGICAL PROCEDURE OF TRACHEOSTOMY. A PRESENTATION FROM THE ENT DEPARTMENT OF AARUPADAIVEEDU MEDICAL COLLEGE, PONDICHERRY

Heart Valve Surgery Animation