Problem
I. John who is a naturally quiet and reserved person, has been advised by his friends to stand up to his troublesome landlord. One Friday evening, he gets drunk and was surprisingly able to confront his landlord. Explain the sudden change in John's personality after taking alcohol.
II. On your 22" birthday, your mother prepares your favorite dish. This makes you remember what your grandmother prepared for you on your 19th birthday. It's almost as if your 19th birthday has been repeated.
i. Which system in the CNS is responsible for this memory?
ii. List 3 structures/system in the CNS which aided in your ability to recall your 19th birthday.
III. i. In the sympathetic system, preganglionic fibers release acetylcholine which binds to muscarinic receptors on postganglionic neurons. Is this statement True/False? Give reasons for your answer.
ii. In the parasympathetic system, both preganglionic and postganglionic neurons release acetylcholine which acts on nicotinic and adrenergic receptors. True/False? Give reasons for your answer.
IV. Explain why gently touching a layer of skin close to an injured skin can decrease pain sensation/bring relief from pain?
V. Differentiate between rapidly adapting and slowly adapting sensory receptors and indicate their significance.
VI. Gideon has asked some students to carry crates of Pepsi to an auditorium. What spinal reflex would enable the students carry the heavy crates of Pepsi successfully to the auditorium?