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Describe the differences in both structure & function between the sympathetic & parasympathetic nerves
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- Figure 35.26 Which of the following statements is false? The parasympathetic pathway is responsible for relaxing the body, while the sympathetic pathway is responsible for preparing for an emergency. Most preganglionic neurons in the sympathetic pathway originate in the spinal cord. Slowing of the heartbeat is a parasympathetic response. Parasympathetic neurons are responsible for releasing norepinephrine on the target organ, while sympathetic neurons are responsible for releasing acetylcholine.Which of the following describes a sympathetic postganglionicaxon?a. long, unmyelinated axonb. short, myelinated axonc. short, unmyelinated axond. long, myelinated axonWhich is true? Nerves to the skeletal muscle are derived from A. Somatic division of nervous system B. Autonomic Nervous System C. Sympathetic division of ANSD. Afferent division of ANSE. All of these are correct.
- Which type of fiber could be considered the longest?a. preganglionic parasympatheticb. preganglionic sympatheticc. postganglionic parasympatheticd. postganglionic sympatheticThe neural crest gives rise to all of the following except:- a. sympathetic chain ganglia. b. the celiac ganglion. c. parasympathetic preganglionic neurons. d. parasympathetic postganglionic neurons. e. the adrenal medullaThe ganglia of the _ division are closer to the spine than the ganglia of the _ division a. Sympathetic, Parasympathetic b. Parasympathetic, Peripheral c. Sympathetic, Peripheral d. Parasympathetic, Sympathetic
- Nicotinic receptors are located ina. postganglionic neurons of the parasympathetic division.b. postganglionic neurons of the sympathetic division.c. membranes of skeletal muscle cells.d. Both a and b are correct.e. all of these sites.Which of these physiological changes would not beconsidered part of the sympathetic fight-or-flight response?a. increased heart rateb. increased sweatingc. dilated pupilsd. increased stomach motilityAtropine A.Tends to stimulate excitatory (sympathetic) functions. B.Increaes heart rate. C.Stimulates parasympathetic function D.Blocks parasympathetic function
- Among the followings which does not indicate the stimulation of parasympathetic system? A. Contriction of skeletal muscle blood and vasodilation of renla blood B. Excitation of the blood flow to the kidneys and smooth muscles of Gl tract C. Inhibition of heart rate and amooth muscles of the urinary bladder Excitation of the smooth muscles of the urinary bladder and Gl tractCharacteristics o Sympathetic Parasympathetic Main function Location of nerve roots Effects on target Organs &physiological processes Heart Bronchioles(airway passages of the lungs) Blood vessels to abdominal organs & skin Blood vessels to skeletal muscle secretion from digestive glands Urine formation/Micturition (urination) pupils of the eyeIn general, parasympathetic activation will produce effects that are _ to those produced by activation of sympathetic neurons. a. similar b. antagonistic c. complimentary d. identical
