CNS Exam I Practice Questions and 100% Correct Answers

The nervous system plays a dominant role in all body responses to internal and external demand EXCEPT? A. coordination B. integration C. contraction D. association C The central nervous system consists of two parts the brain or encephalon and the spinal cord or medulla spinalis, how many cranial nerve pairs are there? a. 24 b. 31 c.12 d. 62 c The somatic component of the nervous system or the voluntary component innervating skeletal musculature, what chemical is released by the somatic axon endings? a. excitatory b. Acetylcholine c. Norepinephrin d. Cholinergic b The autonomic or visceral component of the nervous system also known as the involuntary portion innervates which of the following musculature? a. smooth b. skeletal c. intrafusal d. extrafusal a The parasympathetic subdivision of the visceral component of the nervous system has neurons located in the CNS and PNS all of the following cranial nerves are present EXCEPT? a. VII b. XI c. IX d. X b In the sympathetic subdivision the preganglionic neurons release ACH and postganglionic sympathetics generally release norepinephrine what is the exception? a. connective tissue b. lymphatic vessels