PSL 310 Unit 5 Exam with 100% correct solutions 2024

The GI tract has its own correct answers local nervous system, therefore it doesn't need CNS assistance Why is the GI tract not part of the internal body correct answers because it has harsh conditions that would damage the body, such as low ph or lots or beneficial (when located there) bacteria What is the digestion of food? correct answers the mechanical break down of food into small molecules (absorbable units) In the lumen where is food molecules absorbed? correct answers in the lymph (fats) or blood Pancreas correct answers exocrine, secretes hormones and bicarbonate solution into ducts which lead to blood. layers of GI tract correct answers Serosa, muscle layer (muscularis externa), submucosa, mucosa Serosa correct answers outer layer of GI tract, secretes fluid (aka visceral peritoneum ) Parietal peritoneum correct answers layer that lines the abdominal wall muscle layer (muscular externa) correct answers smooth muscle, longitudinal layer( contracts and shortens tube) and inner layer (contract and constricts) this causes mixing and propelling movements submucosa layer correct answers connective tissue with nerve cells, blood and lymph vessels and glands mucosa correct answers the inner most layer of mucous membrane What are the two nerve plexuses of the GI tract? correct answers sub mucous and myenteric plexus, throughout enteric nervous system GI local nervous system allows correct answers for reflexes to occur without CNS involvement, short relexes . Short reflexes correct answers receptor to nerve plexus to effector cell (intratract) (stretch receptors)