242 A Final Exam Questions& Answers..

The brain stem is made up of the: ​a. cerebellum, pons, and hypothalamus.​ ​b. medulla oblongata, thalamus, and midbrain.​ ​c. medulla oblongata, hypothalamus, and pons. d. medulla oblongata, pons, and midbrain. e. midbrain, hypothalamus, and thalamus. {Ans: d. medulla oblongata, pons, and midbrain.}The primary chemical digestion in the large intestine results from the action of: a. the continued action of pancreatic juice. b. bacterial enzymes. c. bilirubin. d. hydrochloric acid. e. fat-soluble vitamins. {Ans: b. bacterial enzymes.}The brain requires such a large percentage of the body's total blood flow because: ​a. it is such a large percentage of the body's total weight. ​b. its cells are always dividing to replace old cells. ​c. no glucose is stored. ​d. it needs the heat to supply an alternative energy source e.the movement of the blood stimulates the growth of the cytoplasmic neuronal extensions {Ans: ​c. no glucose is stored.}Which of the following is NOT a function of the spleen? a. site of stem cell maturation into T and B cells b. destruction of blood-borne pathogens by macrophages c. removal of worn-out blood cells and platelets by macrophages d. storage of platelets e. hemopoiesis during fetal development {Ans: e.