Cranial ANS Flashcards
Classification of nervous system
Central nervous system
Peripheral nervous system
Division of peripheral nervous system
• Somatic Nervous System
• Autonomic Nervous System
Somatic nervous system
1.Effector:
2.Voluntary/involuntary?
3.How many motor neurons from CNS to effector
4.Is there use of norepinephrine
5.Is there inhibitory capability
6.are sensory signals consciously perceived
7.Can tissues function without nerve supply
Somatic nervous system
1.Effector: skeletal muscles
2.Voluntary/involuntary? Voluntary
3.How many motor neurons from CNS to effector? 1
4.Is there use of epinephrine? No use of norepinephrine
5.Is there inhibitory capability? There’s no inhibitory capability
6.are sensory signals consciously perceived? Yes
7.Can tissues function without nerve supply? No
Autonomic nervous system
1.Effector:
2.Voluntary/involuntary?
3.How many motor neurons from CNS to effector
4.Is there use of norepinephrine
5.Is there inhibitory capability
6.are sensory signals consciously perceived
7.Can tissues function without nerve supply
Somatic nervous system
1.Effector: cardiac and smooth muscle
2.Voluntary/involuntary?involuntary
3.How many motor neurons from CNS to effector?2
4.Is there use of norepinephrine? Yes
5.Is there inhibitory capability? Yes
6.are sensory signals consciously perceived? No
7.Can tissues function without nerve supply? Yes
Comparison of somatic with autonomic nervous system
Neurotransmitter:
Inhibitory/ excitatory capability?
Input from what kind of neurons?
Acetylcholine
Excitatory
Sensory neurons
Comparison of Sympathetic and Parasympathetic Divisions
Origin of preganglionic fibers:
Location of ganglia:
Neurotransmitter:
Comparison of Sympathetic and Parasympathetic Divisions
1.Origin of preganglionic fibers:
Sympathetic: thoracolumbar nerves
Parasympathetic: cranial sacral nerves
2.Location of ganglia:
Sympathetic: far from visceral effector organs; in sympathetic chain or collateral ganglia
Parasympathetic: near or within visceral effector organs
3.Neurotransmitter:
Sympathetic: in ganglia;acetylcholine, in effector organs; norepinephrine
Parasympathetic: in ganglia; acetylcholine, in effector organs;acetylcholine
Cerebrospinal outflow has its lowest efferent nerve cell within——-
The CNS
The autonomic system has its lowest efferent cell stations in
Peripheral ganglion
Two efferent autonomic neurons:
Two efferent autonomic neurons:
Sympathetic
Parasympathetic
Bodily Functions Under ANS Control include:
Bodily Functions Under ANS Control
1 Respiration
2 Circulation
3 Digestion
4 Body Temperature 5 Metabolism
6 Sweating
7 Certain endocrine functions
Centers Of ANS Function include
Centers Of ANS Function
1 Cerebral Cortex
2 Hypothalmus
3 Brain Stem
4 Spinal Cord
—% of fibers in vagus nerve are afferent.
80
• Afferents from the carotid sinus enter the CNS via —— nerve.
• Afferents from the aortic arch enter the CNS via the —— nerve.
• Afferents from the carotid sinus enter the CNS via CN IX.
• Afferents from the aortic arch enter the CNS via the vagus.
Sympathetic/Parasympathetic Divisions
Controlled by nuclei in the ———- hypothalmus.
Sympathetic/Parasympathetic Divisions
4 Controlled by nuclei in the posterolateral hypothalmus.
Parasympathetic Division
4 Contolled by midline and —— nuclei of the hypothalmus
Parasympathetic Division
4 Contolled by midline and anterior nuclei of the hypothalmus