FC Sem Of A Section Of The Human Colon
by Photo Insolite Realite/science Photo Library
Title
FC Sem Of A Section Of The Human Colon
Artist
Photo Insolite Realite/science Photo Library
Medium
Photograph - Photograph
Description
False-colour scanning electron micrograph (SEM) of a section of the human colon, viewed from the interior (lumen) & showing the entrances to the mucous-secreting glands (or crypts of lieberkuhn) of the mucosal inner layer that form a large part of the interior surface. Underneath the mucosa is a layer of smooth muscle, contraction & relaxation of which propels the contents of the colon towards the rectum. In the colon, absorption of water, sodium, vitamins & other mineral takes place; the watery chyme that enters the colon is reduced to semi-solid faeces. Drugs such as anaesthetics, sedatives, steroids & tranquilizers are readily absorbed in the colon. Mag. X 200 at 35mm size.
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February 18th, 2021
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