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Biology 323 Human Anatomy for Biology Majors Lecture 13 Dr. Stuart S. Sumida

Biology 323 Human Anatomy for Biology Majors Lecture 13 Dr. Stuart S. Sumida. Gut Tube: Development, Structure, Function . 1. Implications of Gut Development Foregut Development Midgut Development Hindgut Development 2. Circulation – Part I. Dorsal vs. Ventral Mesentery Components.

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Biology 323 Human Anatomy for Biology Majors Lecture 13 Dr. Stuart S. Sumida

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  1. Biology 323 Human Anatomy for Biology Majors Lecture 13 Dr. Stuart S. Sumida Gut Tube: Development, Structure, Function

  2. 1. Implications of Gut Development Foregut Development Midgut Development Hindgut Development 2. Circulation – Part I

  3. Dorsal vs. Ventral Mesentery Components

  4. Early Development of the Stomach

  5. Continued Development of the Stomach

  6. Rotation of the Foregut

  7. Development of diverticula of the foregut

  8. Pancreas Development

  9. Development of Diverticula of Foregut • Hepatic Diverticulum • Pancreas originally two separate lobes (ventral part of hepatic diverticulum, dorsal independent. • Rotation brings dorsal (tail) and ventral components of pancreas together.

  10. Development of Diverticula of Foregut • Hepatic Diverticulum • Pancreas originally two separate lobes (ventral part of hepatic diverticulum, dorsal independent. • Rotation brings dorsal (tail) and ventral components of pancreas together.

  11. Development of Diverticula of Foregut • Hepatic Diverticulum • Pancreas originally two separate lobes (ventral part of hepatic diverticulum, dorsal independent. • Rotation brings dorsal (tail) and ventral components of pancreas together.

  12. Development of Diverticula of Foregut • Hepatic Diverticulum • Pancreas originally two separate lobes (ventral part of hepatic diverticulum, dorsal independent. • Rotation brings dorsal (tail) and ventral components of pancreas together.

  13. Hepatic Portal Vein Bile Duct

  14. Liver Stomach

  15. Liver: Dorsal View Ventral View Ligamentumteres (= old ductusvenosus)

  16. Foregut - Neurovascular Service: Unpaired Branch of Abdominal Aorta: Celiac Artery Unpaired Tributary of Hepatic Portal Vein: Splenic Vein Sympathetic Nerve: Greater Splanchnic Nerve Sympathetic Nerve Segmental Levels: T5-9 Sympathetic Ganglion: Celiac Ganglion Parasympathetic Nerve: Vagus Nerve (CN – X)

  17. 1. Implications of Gut Development Foregut Development Midgut Development Hindgut Development 2. Circulation – Part I

  18. Dorsal vs. Ventral Mesentery Components

  19. “Repackaging” of the Midgut

  20. Retroperitoneal components of abdominal cavity

  21. Midgut - Neurovascular Service: Unpaired Branch of Abdominal Aorta: Superior Mesenteric Artery Unpaired Tributary of Hepatic Portal Vein: Superior Mesenteric Vein Sympathetic Nerve: Lesser Splanchnic Nerve Sympathetic Nerve Segmental Levels: T10-11 Sympathetic Ganglion: Superior Mesenteric Ganglion Parasympathetic Nerve: Vagus Nerve (CN – X)

  22. 1. Implications of Gut Development Foregut Development Midgut Development Hindgut Development 2. Circulation – Part I

  23. Review of Retroperitoneal components of abdominal cavity

  24. Innervation of Bladder Sympathetic: predominantly L1-2 via hypogastric plexus Parasympathetic: S2-4 (as you would expect of a hindgut derivative).

  25. Developing

  26. Hepatic Portal Vein and Its Tributaries

  27. Sympathetic Supply of the Abdominal Gut

  28. Parasympathetic Supply to the Hindgut: S2-4)

  29. Hindgut - Neurovascular Service: Unpaired Branch of Abdominal Aorta: Inferior Mesenteric Artery Unpaired Tributary of Hepatic Portal Vein: Inferior Mesenteric Vein Sympathetic Nerve: Least Splanchnic Nerve + Lumbar splanchnics Sympathetic Nerve Segmental Levels: T12, L1(2) Sympathetic Ganglion: Superior Mesenteric Ganglion Parasympathetic Nerve: Pelvic Outflow, S2-4

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