NUTR 221 Lecture Notes - Lecture 12: Epiglottis, Storage Tank, Mastication
Document Summary
Enteric nervous system- controlled by electrical system composed of two major intrinsic nerve plexuses: Submucosal nerve plexus (meissner"s plexus) regulates glands and smooth muscle in the mucosa. Segmentation and peristalsis are automatic involving local re ex arcs: linked to the cns via long autonomic re ex arc. Splanchnic circulation: arteries - branch off abdominal aorta. Superior mesenteric small intestine superior mesenteric artery coming off abdominal artery that brings blood to small intestine, inferior mesenteric brings to large intestine. Serves gut, spleen, pancreas and liver (general gi) Cardiac output (how much blood heart is pumping out) = hr (bpm) x sv (how much blood/beat) exercise decreases cardiac output (could drop to around 1/8) because exercise is more needy, gets. Ls 2n03 human nutrition for life sciences d. m. Hepatic vein: blood ow away from liver (into vena cava) digestive. Mouth (oral cavity) palate: forms the roof of mouth. Forms a rigid structure for food: soft palate.
