Exam 4 Visceral Nervous System Flashcards
Where are the cell bodies located for visceral afferent nerves
Posterior root ganglia or relevant cranial nerve ganglion
The central processes (axons) enter cord through whaat
The posterior root or specific cranial nerve
What do peripheral processes (dendrites) carry
Impulses from viscera to cell bodies of autonomic ganglia, plexus, somatic nerves without synapse
Sympathetic afferents travel through what to spinal ganglia
Through the sympathetic trunk by passing through white ramus communicans (for spinal ganglia)
What travels in sacral spinal nerves and cranial nerves
Parasympathetic afferents
Visceral afferents are associated with receptors that are sensitive to what
Pressure, chemical concentrations, and muscle stretching
Pregang parasymp fibers are what kind
Cholinergic
What are the pregang parasymp fibers
CN 3, 7, 9, 10 and spinal nerves 2, 3, 4
Where do postgang parasymp fibers extend to
Effector organs
Post gang parasymp fibers extend to effector organs to do what 4 things
Decrease CO, constrict bronchial tree, constrict pupils, stimulate peristalsis
What parasymp fibers will supply structures in the head
CN 3, 7, 9
What parasympathetic will supply cardiac, respiratory, digestive structrues in neck, thorax, abdomen
CN X - vagus
What parasympathetics supply the distal parts of the digestive system and urogential system
S 2,3,4
Where are the preganglionic cell bodies located at for the oculomotor nerve
The oculomotor nucleus within the midbrain periaquaductal gray
Where does the oculomotor nerve synapse when going into the orbit
The ciliary ganglion then to the eye
Where are postgang axons for the oculomotor nerve carried in
Ciliary nerves that enter eyeball
What muscles do postgang axons of the oculomotor nerve supply after being carried to the eye
The ciliary muscle and the sphincter pupillae
Pregang cell bodies of the facial nerve are located where
In the superior salivary nucleus
Where does the facial nerve exit the CNS
In the intermediate nerve carried in two branches, greater petrosal and chorda tympani
Where does the greater petrosal nerve leave the facial nerve
At the geniculate ganglion carrying pregang parasymp fibers
After reentering in the temporal bone through the foramen lacerum where does the greater petrosal nerve go
Travels in pterygoid canal to synapse in pterygopalatine ganglion
Postgang fibers of the greater petrosal nerve are distributed in the lacrimal to where
The lacrimal, nasal, palatine, and pharyngeal glands
Where does the chorda tympani carrying pregang parasymp fibers leave the temporal bone
The pterygotympanic fissure
After leaving the temporal bone what does the chorda tympani combine with
The lingual nerve (mandibular division trigeminal)