UM FLINT BIO 167 EXAM 4 ANS QUESTIONS AND ACCURATE ANSWERS 2024/2025
| VERIFIED
what is another name for the ANS? - ✔️✔️involuntary nervous system or general visceral motor system
What do the preganglionic fibers of the ANS release? - ✔️✔️Acetylcholine
what do the postganglionic fibers of the ANS release? - ✔️✔️norepinephrine or ACh
What do somatic motor neurons release at their synapses with skeletal muscle? - ✔️✔️Acetylcholine
where are the parasympathetic ganglia located? - ✔️✔️in or near their visceral effectors organs
where are sympathetic ganglia located? - ✔️✔️close to spinal cord
what are the 3 main differences between sympathetic and parasympathetic divisions? - ✔️✔️sites or
origins, relative lengths of fibers, location of ganglia
are the preganglionic fibers of the sympathetic nervous system long or short? - ✔️✔️short
are the postganglionic fibers of the sympathetic nervous system long or short? - ✔️✔️long
are the preganglionic fibers of the parasympathetic nervous system long or short? - ✔️✔️long
are the postganglionic fibers of the parasympathetic nervous system long or short? - ✔️✔️short
where do the parasympathetic preganglionic fibers originate? - ✔️✔️in the brain and sacral spinal cord,
carinosacral
where do the sympathetic fibers originate? - ✔️✔️thoracic and lumbar regions of spinal cord,
thoracolumbar
, which ANS division is referred to as the "rest-and-digest" system? - ✔️✔️parasympathetic division
where are the cell bodies of the cranial part of the parasympathetic division located? - ✔️✔️brain stem
where do the preganglionic fibers of the parasympathetic division run? - ✔️✔️oculomotor, facial,
glossopharyngeal, and vagus cranial nerves
how many paravertebral ganglia are in the sympathetic trunk? - ✔️✔️23: 3 cervical, 11 thoracic, 4
lumbar, 4 sacral, 1 coccygeal
what are the major neurotransmitters of the ANS? - ✔️✔️acetylcholine and norepinephrine
what fibers releases Ach? - ✔️✔️cholinergic fibers
where is ACh of cholinergic fibers released? - ✔️✔️all ANS preganglionic axons and all parasympathetic
postganglionic axons
what fibers release norephinephrine? - ✔️✔️adrenergic fibers
where do adrenergic fibers release norepinephrine? - ✔️✔️Almost all sympathetic postganglionic axons
adrenergic fibers at sweat glands release what neurotransmitter? - ✔️✔️Acetylcholine
what do postganglionic fibers of the ANS release at effectors? - ✔️✔️norepinephrine or ACh
what secretes norepinephrine in the ANS? - ✔️✔️most sympathetic fibers
what secretes ACh in the ANS - ✔️✔️parasympathetic fibers
what is the neurotransmitter effect of the somatic nervous system? - ✔️✔️always excitatory
| VERIFIED
what is another name for the ANS? - ✔️✔️involuntary nervous system or general visceral motor system
What do the preganglionic fibers of the ANS release? - ✔️✔️Acetylcholine
what do the postganglionic fibers of the ANS release? - ✔️✔️norepinephrine or ACh
What do somatic motor neurons release at their synapses with skeletal muscle? - ✔️✔️Acetylcholine
where are the parasympathetic ganglia located? - ✔️✔️in or near their visceral effectors organs
where are sympathetic ganglia located? - ✔️✔️close to spinal cord
what are the 3 main differences between sympathetic and parasympathetic divisions? - ✔️✔️sites or
origins, relative lengths of fibers, location of ganglia
are the preganglionic fibers of the sympathetic nervous system long or short? - ✔️✔️short
are the postganglionic fibers of the sympathetic nervous system long or short? - ✔️✔️long
are the preganglionic fibers of the parasympathetic nervous system long or short? - ✔️✔️long
are the postganglionic fibers of the parasympathetic nervous system long or short? - ✔️✔️short
where do the parasympathetic preganglionic fibers originate? - ✔️✔️in the brain and sacral spinal cord,
carinosacral
where do the sympathetic fibers originate? - ✔️✔️thoracic and lumbar regions of spinal cord,
thoracolumbar
, which ANS division is referred to as the "rest-and-digest" system? - ✔️✔️parasympathetic division
where are the cell bodies of the cranial part of the parasympathetic division located? - ✔️✔️brain stem
where do the preganglionic fibers of the parasympathetic division run? - ✔️✔️oculomotor, facial,
glossopharyngeal, and vagus cranial nerves
how many paravertebral ganglia are in the sympathetic trunk? - ✔️✔️23: 3 cervical, 11 thoracic, 4
lumbar, 4 sacral, 1 coccygeal
what are the major neurotransmitters of the ANS? - ✔️✔️acetylcholine and norepinephrine
what fibers releases Ach? - ✔️✔️cholinergic fibers
where is ACh of cholinergic fibers released? - ✔️✔️all ANS preganglionic axons and all parasympathetic
postganglionic axons
what fibers release norephinephrine? - ✔️✔️adrenergic fibers
where do adrenergic fibers release norepinephrine? - ✔️✔️Almost all sympathetic postganglionic axons
adrenergic fibers at sweat glands release what neurotransmitter? - ✔️✔️Acetylcholine
what do postganglionic fibers of the ANS release at effectors? - ✔️✔️norepinephrine or ACh
what secretes norepinephrine in the ANS? - ✔️✔️most sympathetic fibers
what secretes ACh in the ANS - ✔️✔️parasympathetic fibers
what is the neurotransmitter effect of the somatic nervous system? - ✔️✔️always excitatory
