KAAP221 Lecture Notes - Lecture 17: Ascites, Pharyngeal Arch, Defecation

• School: University of Delaware
• Department: Kinesiology & Appl Physiology
• Course: KAAP221
• Professor: Shannon Lennon

Document Summary

Lecture 17: chapter 22 - the digestive system, organization, gi tract. Digestive tract - long muscular tube lined by mucous membrane in which food passes from mouth to anus; major organs are oral cavity (mouth), pharynx, esophagus, stomach, small intestine, large intestine (colon) Accessory organs - teeth, tongue, salivary glands, liver, gallbladder, pancreas: mesentery, a double layer of peritoneal membrane, mesothelial surface provide route to and from gi tract for blood vessels, nerves, and lymphatic vessels. Inner circular and outer longitudinal layers of smooth muscle (throughout most of the gi tract) Visceral peritoneum along the gi in abdominal cavity. Replaced by fibrous adventitia in oral cavity, pharynx, esophagus, and rectum. Nerve network involved in local control of digestive activities. Regulate glands and smooth muscle: myenteric plexus (in muscular layer, pns stimulation increases muscle tone while sns decreases muscle tone and activity; often because. Thin filaments attached to dense bodies - distributed throughout sarcoplasm; similar to z lines of skmm tissue.