verbBiology & Physiology
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- The adenohypophysis, or anterior pituitary, is derived from an evagination of oral ectoderm of the dorsal median region of the stomodeum.
- The normal pancreas is derived from several evaginations originating from the wall of the primitive duodenum.
- On the other hand, rectal prolapse is a full-thickness evagination of the rectal wall outside the anal opening.
mid 17th century: from Latin evaginat- 'unsheathed', from the verb evaginare, from e- (variant of ex-) 'out of' + vagina 'sheath'.
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