SMALL INTESTINE Villi: Fingerlike projections to increase surface area X 600.
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Transcript of SMALL INTESTINE Villi: Fingerlike projections to increase surface area X 600.
SMALL INTESTINE
•Villi: Fingerlike projections to increase surface area
• X 600
VILLI
•
SMALL INTESTINE
•Crypts: Glands between villi that produce intestinal juices.
SMALL INTESTINE
•Lacteal: Center of villi, where FAT products get absorbed.
SMALL INTESTINE
•Arteries and Veins: Vessel network in each villi, ABSORB amino acids and glucose.
Veins and Arteries
Digestion & Absorbtion
•3 Big classes (4 with Nucleic acids)
•1. Carbohydrates•2. Proteins•3. Lipids
Carbohydrates
• Start with Starch
STARCH Maltose• AMYLASE
Carbohydrates
•Maltose Glucose• Maltase
Carbohydrates
•Glucose BLOOD
PROTEINS
• Start with Protein
PROTEIN PEPTIDE• Trypsin
Proteins
PEPTIDE Amino Acids
Peptidase
BLOOD
LIPIDS FAT
• Start with fat
FAT FAT DROPLET• BILE
LIPIDS
F. Droplets Fatty Acids
LIPASE Glycerols
LACTEAL (Lymph System)
LARGE INTESTINE
•COLOR CODE THE LARGE INTESTINE
•C, B, D, F, H, I, J, and K
LARGE INTESTINE
Functions:
Only about 5-6 feet
Main function to absorb water
LOTS of bacteria
LARGE INTESTINE
•Cecum: Receive digestive liquid from S.I.
•Compaction begins
LARGE INTESTINE
•Ileocecal Valve:
•One way valve between cecum and ileum.
LARGE INTESTINE
• Appendix: Worm like structure, no function.
• Inflammation???
COLON (4)
•Ascending = goes up
•Transverse = across
•Descending = goes down
•Sigmoid = bending part
LARGE INTESTINE
•Rectum: Collects feces and expels
•Very Muscular
LARGE INTESTINE
•Defecation: Expelling of waste, some conscious control
LARGE INTESTINE
•ANUS: External opening
•Two anal sphincter
•1. Interior = involuntary
•2. Exterior = voluntary
DISORDERS
•Diarrhea: NOT enough water absorbed by the colon.
• As part of the digestion process, or due to fluid intake, food is mixed with large amounts of water. Thus, digested food is essentially liquid prior to reaching the colon. The colon absorbs water, leaving the remaining material as a semisolid stool. If the colon is damaged or inflamed, however, absorption is inhibited, and watery stools result.
DISORDERS
• Constipation: TOO much water absorbed by the large intestine.
Make sure you drink plenty of water and eat more fiber
DISORDERS
•Hemorrhoids: Large veins inflamed in rectum and anus
Hemorrhoids•
•
6 hours
2-7 days
DISORDERS
•Appendicitis: Inflammation of the appendix, HAVE to be removed.
Appendicitis
Appendicitis
DISORDERS
•Colostomy: Remove parts of the colon.
Colostomy
Colostomy
DISORDERS
•Colon Cancer: 2nd Leading cause of cancer death in men and women.
The cells divided when they were not needed and formed an extra mass
of tissue-cancer
• Define colonopticosis
DISORDERS
•Colonopticosis:•Colon = L.I.•Optic = eye, see•Osis = state condition