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FISIOLOGIA DIGESTIVA (BCM II)

FISIOLOGIA DIGESTIVA (BCM II). Clase 10: Fisiología del colon. Dr. Michel Baró A. The anatomy of the colon is shown. Circular and longitudinal muscle layers in colon. The layers of the colonic wall are shown. Normal colonic mucosa in biopsy specimen.

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FISIOLOGIA DIGESTIVA (BCM II)

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  1. FISIOLOGIA DIGESTIVA (BCM II) Clase 10: Fisiología del colon Dr. Michel Baró A.

  2. The anatomy of the colon is shown

  3. Circular and longitudinal muscle layers in colon

  4. The layers of the colonic wall are shown

  5. Normal colonic mucosa in biopsy specimen

  6. Maturation process of colonic epithelial cells (3 a 5 días)

  7. A human rectal columnar epithelial cell

  8. Arterial blood supply to the colon is shown

  9. The venous system that drains the colon is shown

  10. The extrinsic innervation of the colon

  11. Intrinsic innervation of the colonic wall

  12. Ganglia in submucosal and myenteric plexuses

  13. Lymph nodal drainage of the colon and anus (a)

  14. Lymph nodal drainage of the colon and anus (b)

  15. Scintigraphic pattern of colonic transit

  16. Time a substance spends in each region of colon

  17. Distinct motor patterns as measured by manometry Contracciones de corta duración: estacionarias, de mezcla Contracciones de larga duración: estacionarias o migratorias breves Contracciones de gran amplitud: movimientos de masa

  18. Patterns of migration of contractions

  19. Presence and intensity of short-duration contractions

  20. Colonic electrical control or slow-wave activity Borde submucoso Borde mientérico

  21. Electrical activity from the human colon SSB: Short spike burst. LSB: Long spike burst. MLSB: Migrating long spike burst

  22. Patterns of motor and myoelectric activity (perros)

  23. Development of high-amplitude propagating contractions

  24. Colonic contents and motor activity in colon

  25. Motility of colon over 24-hour period Colonic motility index

  26. Gastrocolonic motor response to meal ingestion

  27. Fecal bolus in the colon has been postulated

  28. Mediation of both limbs of colonic peristaltic reflex

  29. Motor activity of colon modulated by vagal activity (ferret) Actividad fásica espontánea del colon proximal

  30. Colonic motor function can be significantly altered Am J Med 1951

  31. Summary of small intestinal and colonic fluid balance

  32. Major electrolyte transport mechanisms

  33. Proposed pathways of active sodium transport in colon (a)

  34. Proposed pathways of active sodium transport in colon (b)

  35. The colon exhibits a net secretion of potassium

  36. Sodium absorption and potassium secretion

  37. The colonic lumen possesses a luxuriant flora

  38. Fecal flora organisms

  39. The anatomy of the rectum and anus

  40. The muscular arrangement of the levator ani muscles

  41. The histology of the rectal and anal mucosae

  42. The arterial blood supply specific for the anus

  43. Factors necessary for maintenance of fecal continence

  44. The pressure profile of the anal canal

  45. Triple loop mechanism of external anal sphincter

  46. Epithelial nerve endings provide a specialized system

  47. Fecal continence aided by highly compliant rectum (a)

  48. Fecal continence aided by highly compliant rectum (b)

  49. The reflex responsiveness of the anal region Reflejo inhibitorio rectoanal

  50. Defecation involves a coordinated interaction

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