University:
Camosun College
Course:
BIOL 252 | Pathophysiology for Nursing 1
Academic year:

2024
Views:

472

Pages:

4
Author:

Aysha A.

Estent: • Extends from pylorus to iloceal Junction It is about a long length: • greater in males than in females alt Greater in cadavers than living introd Divided into: •Upper fuced part called duodenum measure abort 25cm length • louvre, molile part from leng conducted tules Upper live-fifth arc concom as Jejenem demean three-fift-ileum Features: Large surface Area: For absorption of digested food. a) great length of intestine (b) presence of circular folks of mucus membrane villi I micro villk Circular folds of mucus membrane pilical circles values of kicking form complete incomplete These folds are permanent. b) Intestinal villi "finger-like projetions of mucus membrane •yone surface of intestinal micaso ninety appearances. 1. They are large numbers in duodenum s Jejenum fever in illium • Density vary - 10 to 40 per sq.mm Surface area about I to 2 mm lang increased by 8 limes -villus-covered columnar cells microvessels. c) Intestinal Glands Crypts of Liberation • simple telecular gland distributed over micus memberane of Jejènum I ileumolo open a small circular apertus on mucus member ane between well. secrets digestive enzyme mucus show high loved mototre activity replaced every 2 to 4 days seal 1) solitary lymphatic follicles I to 2mm in diameter distributed throughout small, lange intestines. 2) Aggregated lymphatic follicles: (peyers patches) •Circular o oval patches, varying length frem 20 em contour 10 to 200 folder largest numercres distal fejinum in flaum, small, femell in • solitary aggregated mest numerous at puberty * Nerne supply: Actertial supply to Jejemam slum derived from Jejunal steal leranches of mesenteric artery • Vasa recta serous muscle coats plesxce musar bu cood. , numerous branches forms plecus in sulmasa. * lymphatics: (lacteals) have circular correre in walls of intestine large lymphatic vessels formed at merenberr border pass to mesenteric lymph nodes * Nerme supply! • Sympathetic (Tg to T11) parasympatheka (vagus) •Sympathetic nerves are motor to splinters 6 parasupratietic inhibit sphinxes nerves stimulate peristalsis but -mesenteric opalescent of Auerbach, soulmate plexus Function: •digestion, absorption of digested content from fluid.