Exam #3 Assignment

What are the four basic digestive processes? {Ans: motility, secretion, digestion, absorption}How many thin filaments are on each end of a sarcomere? {Ans: 6}What is the range of action potentials per minute for the cells in the AV node? {Ans: 40-60}Muscles that produce precise, delicate movements have fewer muscle fibers in their motor units compared to muscles made for powerful movements.​ {Ans: True}​Where are the heart cells with the fastest rate of action potential initiation localized? {Ans: SA node}Which section of the stomach has the thickest musculature? {Ans: antrum}What happens to a muscle during an isometric contraction? {Ans: it is prevented from shortening (same length)}What are the three phases of gastric secretion?​ {Ans: cephalic, gastric, intestinal}How many steps in the muscle excitation, contraction, and relaxation processes require ATP? {Ans: 4}What are the two components of the biliary system? {Ans: liver and gallbladder}What must be combined with vitamin B12 for it to be absorbed in the small intestine?​ {Ans: Intrinsic factor}In a normal heart, what is the average amount of blood that's left in the ventricle at the end of systole when ejection is complete?​ {Ans: 65mL}What is the