Download Free Medical Small and Large Intestines PowerPoint Presentation

Small and Large Intestines PowerPoint Presentation

DOWNLOAD MEDICAL POWERPOINT PRESENTATION

About This Presentation

Description : Check out this medical presentation on Digestive System, which is titled "Small and Large Intestines", to know about parts and functions of small and large intestines.

Tags : Digestive System, Small, Large Intestines, parts, functions

Published on : Jul 10, 2021 | Views : 3012 | Downloads : 5

Shareable Url :

Embed Code :

Comment

Transcript

Slide 1-

Small and Large Intestines
Slide 2-

Parts of the Small Intestines
Slide 3-

ppt slide no 3 content not found
Slide 4-

How do the parts of Small intestines Vary? Duodenum: secretes mucous enzymes and hormones and is a site of entry for bile and pancreatic juices Jejunum: nutrient absorption ileum: central portion of the abdominal cavity; pH 7-8; absorbs B12 and bile salts
Slide 5-

Intestinal Wall Mucosa contain: absorptive cells aka: enterocytes 2 layers of smooth muscle Circular and longitudinal aid in intestinal mobility Serosa: supportive CT
Slide 6-

Function of villi and microvilli Specialized absorptive units Microscopic units with layers of epithelial cells 200m2 for nutrient absorption desmosomes and tight junctions prevent microbes b/t cells
Slide 7-

Regulator of absorptive units Absorption occurs by active transport, facilitated diffusion, Na/K pump Actin (protein) Filaments regulated by autonomic nerve fibers Fats and water soluble nutrients take different paths
Slide 8-

Movement Patterns Segmentation: circular muscle contraction Peristalsis: movements by circular and longitudinal muscles
Slide 9-

ppt slide no 9 content not found
Slide 10-

ppt slide no 10 content not found
Slide 11-

Large Intestines Colon 6 cm wide and 1.5 meets long (6 feet)
Slide 12-

Movement of chyme Chyme enters the colon thru ileocecal valve Located b/t ileum and colon Gastroileal reflex regulates ileocecal valve by the peristaltic waves
Slide 13-

ppt slide no 13 content not found
Slide 14-

Major segments of Lg intestines Transverse Ascending Sites of water and Na absorption and mucus secretions Descending Sigmoid Storage of fecal matter
Slide 15-

ppt slide no 15 content not found
Slide 16-

Process that allows for water absorption Osmosis …following the Na/K pump which is what type of cellular transport??
Slide 17-

Important to replenish electrolyte balance Homeostasis K is secreted into large intestines
Slide 18-

Stool mass What’s in your Poo? Dietary fiber (pectin and cellulose) Fruits and vegetables Indigestible substances
Slide 19-

Movements of colon Segmentation: circular muscle contraction Peristalsis: movements by circular and longitudinal muscles Mass movement: force of feces along the colon through the anal canal
Slide 20-

Mass movements Defecation Rectal distention triggers defecation reflex, which then forces feces out of anal canal Control? Other mechanisms Internal and external valves (sphincters) Pressure from abdominal cavity
Slide 21-

Diseases/Disorders Diverticulitis Fever, pain in abdomin, diareherra Possibly caused from increase in intraluminal pressure. Indiv. With low dietary fiber intake at high risk
Slide 22-

ppt slide no 22 content not found
Slide 23-

Crohn’s Disease autoimmune disease: caused by the immune system attacking the gastrointestinal tract and producing inflammation in the gastrointestinal tract may affect any part of the gastrointestinal tract from mouth to anus, Symptoms: abdominal pain, diarrhea (which may be bloody), vomiting, or weight loss Type of inflammatory bowel disease (IBD) appears to be a genetic link Mutations in the CARD15 gene