1. What separates the hindgut from the developing urinary system. 2. How is the anal canal formed...

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Medical Sciences

1. What separates the hindgut from the developingurinary system.
2. How is the anal canal formed and why does its 2 halves havedifferent blood supplies and nerve innervation?
3. Discuss the development and rotation of the stomach.
4. Discuss how the pancreas ( and its duct system) forms.
5. What are the embryological precursors for the liver, gallbladderand bile duct?
6. Discuss the development of the midgut. Which adult derivativedevelops from which limb of the primary intestinal loop?
no figure needed.

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Ans 1 The urogenital system arises during the fourth week of development from urogenital ridges in the intermediate mesoderm on each side of the primitive aorta The nephrogenic ridge is the part of the urogenital ridge that forms the urinary system Three sets of kidneys develop sequentially in the embryo Ans 2 It is formed by the fusion of the internal anal sphincter external anal sphincter and puborectalis muscle and is palpable on digital rectal examination Modality Above Pectinate line Below Pectinate line Arterial Supply Superior rectal artery branch of inferior mesenteric artery Anastomosing branches from the middle rectal artery Inferior rectal artery branch of the internal pudendal artery Anastomosing branches from the middle rectal artery Venous See Answer

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