Human Digestive System Diseases/Disorders of the Human Digestive System
What happens when water is not reabsorbed by the large intestine?
Diarrhea http://www.youtube.com/watch?v=ln_crYIBw00&feature=related http://www.youtube.com/watch?v=BYW6C44zo24&NR=1&feature=endscreen
Diarrhea intestinal disturbance increased peristaltic activity of the large intestine decreased water absorption results in increased, multiple, watery feces; may result severe dehydration especially in infants.
What happens when too much water reabsorbed by the large intestine?
Constipation
Constipation sluggish peristaltic movement too much water is reabsorbed the solid waste hardens large intestine is emptied with difficulty
What is this?
Appendicitis is an inflammation of the appendix due to infection.
A Gastric Ulcer
Ulcer open sore in the mucus membrane resulting from localized breakdown of tissues
Other Malfunctions of the Digestive System Ulcers are open sores in the interior wall of the digestive tract, most often in the stomach or the upper portion of the small intestine. The acid in gastric juice irritates the sores and causes pain or discomfort.
Bacteria cause ulcers
Gallstones
Gallstones
Gallstones are an accumulation of hardened cholesterol and/or deposits in the gall bladder. Cause - if your liver excretes more cholesterol than your bile can dissolve, the excess cholesterol may form into crystals and eventually into stones. Risk Factors Eating a high-fat diet Eating a high-cholesterol diet Eating a low-fiber diet
Colon Cancer
Endoscope
Colorectal Cancer SEER Incidence Rates. by Race and Ethnicity, U. S
Colorectal Cancer U.S. Death Rates* by Race and Ethnicity, 1975–2005
Colon cleansing http://www.youtube.com/watch?v=4Yziam3q7hE
liver
Crohn’s Disease chronic inflammatory condition of the gastrointestinal tract
Crohn’s Disease Symptoms General symptoms • Rectal bleeding • Persistent Diarrhea • Rectal bleeding • Urgent need to move bowels • Abdominal cramps and pain • Sensation of incomplete evacuation • Constipation (can lead to bowel obstruction) General symptoms • Fever • Loss of appetite • Weight Loss • Fatigue • Night sweats • Loss of normal menstrual cycle
Crohn’s Disease Cause ????? genetics, and/or environmental factors Diet and stress may aggravate Crohn’s Disease, but they do not cause the disease on their own
Crohn’s Disease Cause Autoimmune disease Harmless symbiotic bacteria are mistaken for harmful invaders and the immune system mounts a response. Cells travel out of the blood to the intestines and produce inflammation. Chronic inflammation leads to a patient’s symptoms.
Irritable Bowel Syndrome Syndrome - a group of symptoms that occur together Symptoms abdominal pain or discomfort, cramping, bowel movements that occur more or less often than usual stool that appears less solid and more watery, or harder and more lumpy, than usual bowel movements that improve the discomfort
Irritable Bowel Syndrome Brain-Gut Signal Problems; Altered levels of neurotransmitters and hormones - Hyper-reactivity of intestines (too much peristalsis) - Hypersensitivity to pain - Mental Health Problems - Bacterial infection; Small Intestinal Bacterial Overgrowth - Genetics or Environmental? - Food sensitivity; allergies, absorption issues
Enjoy Your Lunch!