Exam 1: BIOS 256 / BIOS256 (2024/ 2025 Update) Anatomy and Physiology IV | Complete Guide with Questions and Verified Answers| 100% Correct| Grade A -Chamberlain

Exam 1: BIOS 256 / BIOS256 (2024/ 2025 Update) Anatomy and Physiology IV | Complete Guide with Questions and Verified Answers| 100% Correct| Grade A -Chamberlain Q: Accessory organs: Teeth, tongue, salivary glands, liver, gallbladder, and pan- creas Q: Enteric nervous system Answer: nervous network in esophagus, stomach, and in- testines that regulates digestive tract motility, secretion, and blood flow Q: The enteric nervous system has how many neurons? Answer: over 100 million Q: How does the enteric nervous system function? Answer: Can function independently of central nervous system • But CNS usually exerts influence on its action Q: The enteric nervous system is considered part of what nervous system?- Answer: autonomic nervous system Q: Enteric nervous system is composed of how many networks of neurons?- Answer: Two: submucosal plexus and myenteric plexus Q: Submucosal plexus Answer: in submucosa • Controls glandular secretions of mucosa • Controls movements of muscularis mucosae Q: Myenteric plexus Answer: parasympathetic ganglia and nerve fibers between the two layers of the muscularis externa • Controls peristalsis and other contractions of muscularis externa Q: Saliva Answer: a hypotonic solution of 97%-99.5% water and solutes such as mucus, electrolytes, lysozymes, immunoglobulin, salivary amylase, and lingual lipase PH: 6.8-7 Q: Mucus Answer: binds and lubricates the mass of food and aids in swallowing Q: Electrolytes Answer: Na+, K+, Cl-, phosphate and bicarbonate Q: Lysozyme Answer: enzyme that kills bacteria Q: Immunoglobin A(IgA) Answer: an antibody that inhibits bacterial growth Q: Salivary Amylase Answer: enzyme that begins starch digestion in the mouth Q: lingual lipase enzyme that is activated by stomach acid and digests fat after the food is swallowed Q: Swallowing (deglutition)