Autonomic Nervous System Questions
Which of these does not correctly match its plexus with the organ(s) it innervates? - Cardiac plexus - heart - Hypogastric plexus - esophagus - Celiac plexus - Abdominal viscera - Pulmonary plexus - lungs
Hypogastric plexus - esophagus
In the inferior segments of the spinal cord, in which spinal segments do the parasympathetic autonomic nuclei lie? - S2-S4 - L4-L5 - L3-S2 - T8-L5 - T7-T12
S2-S4
What happens when an organ receives neural information from both sympathetic and parasympathetic divisions? - The actions of the divisions work together to produce exaggerated changes in organ functions. - The actions of each division are usually antagonistic to the other. - The neurons of each division will travel through the same ganglia. - Each division will attempt to block the reception of information in the tissue from the other division.
The actions of each division are usually antagonistic to the other.
Which of the following is a major difference between the autonomic nervous system (ANS) and the somatic nervous system (SNS)? - Efferent neurons exist only in the SNS. - Afferent information in the ANS is processed in the CNS, but not in the SNS. - Afferent neurons exist only in the ANS. - The arrangement of the neurons connecting the CNS to the effector organs is different between the ANS and the SNS. - Efferent impulses are sent to effector organs in the SNS, but not in the ANS.
The arrangement of the neurons connecting the CNS to the effector organs is different between the ANS and the SNS.
The sympathetic division of the ANS has ________. - norepinephrine as a transmitter substance - preganglionic neuron cell bodies in the T1-L2 regions of the spinal cord - long postganglionic axons - short preganglionic axons - All of the choices are correct
all of the choices are correct
If Michael experiences a frightening situation that causes the stimulation of his sympathetic nervous system, which of the following is NOT likely to occur? - a feeling of energy and euphoria - mobilization of energy reserves - elevation of muscle tone - an increase in smooth muscle activity along the GI tract
an increase in smooth muscle activity along the GI tract
The intramural ganglia of the parasympathetic division can be found __________. - in the tissue of the target organs - in the thoracic spinal region - along the abdominal aorta - in any of the listed locations
in the tissue of the target organs
Most sympathetic postganglionic fibers release which neurotransmitter at neuroeffector junctions? - norepinephrine - serotonin - dopamine - cholecystokinin - acetylcholine
norepinephrine
Long, unmyelinated axons leaving the ANS ganglia are called ________ fibers. - inhibitory - excitatory - postganglionic - preganglionic - ganglionic
postganglionic
Postganglionic axons of the autonomic nervous system are ________. - unmyelinated - myelinated - sometimes myelinated and sometimes unmyelinated
unmyelinated
