A+PII: The Autonomic Nervous System and Visceral Reflexes

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Which class of neurotransmitter receptor is located on all autonomic ganglia? alpha - adrenergic muscarinic nicotinic beta - adrenergic

Nicotonic

Which of the following is not an effector found in the autonomic nervous system? cardiac muscle thyroid gland muscular lining of intestinal walls biceps brachii muscle

biceps brachii muscle

Which neurotransmitter is important for communication in the autonomic nervous system? norepinephrine dopamine both norepinephrine and acetylcholine acetylcholine seratonin

both norepinephrine and acetylcholine

Which of the following does not result from sympathetic stimulation? acceleration of the heart digestive secretion piloerection dilation of the pupil enhanced blood clotting

digestive secretion

The digestive tract has a semi-independent nervous system called the ____________ nervous system. enteric visceral adrenergic organic gastrica

enteric

Which of the following cranial nerves carries sympathetic fibers? oculomotor facial none of them trigeminal vagus

none of them

Which of the following statements regarding autonomic output pathways is not true? sympathetic nerves have a ganglion located near the spinal cords parasympathetic nerves have a long, unmyelinated postganglionic fiber sympathetic nerves originate in the thoracic and lumbar regions of the spinal cord sympathetic nerves have a short, myelinated preganglionic fiber parasympathetic nerves have a ganglion located near or in the target organ

parasympathetic nerves have a long, unmyelinated postganglionic fiber SHORT unmyelinated postganglionic fiber

Which of the following is not a visceral reflex? increase in blood pressure defecation sneezing dilation of the pupils patellar reflex

patellar reflex

A cholinergic neuron secretes acetylcholine has receptors for norepinephrine has receptors for acetylcholine secretes norepinephrine secretes both acetylcholine and norepinephrine

secretes acetylcholine

Which of the following is a result of parasympathetic stimulation? stimulates glucose release stimulates pancreatic secretions stimulates the adrenal medulla accelerates heartrate relaxes the bronchii in the lungs

stimulates pancreatic secretions


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