PNB 2265 Lecture Notes - Lecture 18: Rugae, Histology, Salivary Gland
16 Aug 2018
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False: most digestion happens in the stomach, food helps to digest itself, food absorbs alcohol, acidic food raise your body acid load, cleaning out the colon via enemas is good for you. Provides the energy and nutrients needed for people to survive. Anatomy: serosal, muscularis and mucosal layers, nerve plexus. Smooth muscle: remember the relevant properties of smooth muscle, great endurance, activated by stretch, involuntary. Peristalsis: movement along a path, (cid:862)wringing out towel all the way down, pushing water out of the towel(cid:863, two fingers pressing on a tube and sliding along, pushes things through the tube. Segmentation: mixing, grabbing different pieces of towel and squeezing, just pushing water around in towel, kneading dough kinda. Components: local, physical and chemical, nervous, cns psym and sym, local enteric system, hormonal, local and at a distance, reflexes. Cephalic: stomach growling when smell or see food, mouth waters, vagus nerve mediated. Gastric: presence of food in stomach, stomach distension and amino acids.
