Youtor
Embryology of the GIT III Hindgut Easy to Understand
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=Dq3F4yby0qo
The development of the hindgut explained very simply! • If you are completely new to embryology and you want to understand it quickly, this should be the first video you watch: • • Introduction to Embryology - Fertilis... • Post any questions you have about the video below, I read all the comments: • -------------------------------- • Recommended Text • -------------------------------- • Easy Embryology is a book that is dedicated to the simplification of embryology. It is available at https://drminass.com/product/easyembr.... Contact Dr. Minass for more information. • ---------------------------------------- • Interact With Dr. Minass! • ---------------------------------------- • Website - https://www.drminass.com • Email - [email protected] • Patreon - / drminass • Facebook - / m1na55 • Instagram - @m1.nass • Post - Address to: • Minass • Parcel Locker 10106 04448 • 59 Penshurst Street • Willoughby, NSW • Australia 2068 • Summary for your notes: • hindgut gives rise to the distal third of the transverse colon, descending colon, sigmoid, rectum and the upper 2/3 of the anal canal. • endoderm of the hindgut also contributes to the internal lining of the bladder and urethra • terminal hindgut enters the posterior portion of the cloaca, and the allantois enters the anterior portion. • cloaca becomes the anorectal canal and the urogenital sinus • the cloaca is an endoderm cavity covered at the cloacal membrane by ectoderm • the urorectal septum, which is mesoderm, separates the region between allantois and hindgut • septum grows caudally and the tip fuses with the cloacal membrane giving rise to the perineal body, and the urogenital and anal membranes. • upper 2/3 of anal canal is endoderm and supplied by inferior mesenteric artery (IMA) • lower 1/3 of anal canal is ectoderm and supplied by inferior rectal arteries from the internal iliac artery. • boundary is the pectinate line • Abnormalities: • rectovaginal fistula • atresia • congenital megacolon - Hirschprung disease • imperforate anus
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