Flashcards in Unit VII - Visceral Afferents & Parasympathetics Deck (120)
Preganglionic parasympathetic fibers from cranial nerve VII are carried in what two branches of the facial nerve?
Greater petrosal nerve and chorda tympani
The greater petrosal nerve leaves the facial nerve at what ganglion?
The greater petrosal nerve re-enters the petrous part of the temporal bone through what opening?
The greater petrosal nerve travels in the pterygoid canal and ultimately joins with what ganglion?
Postganglionic parasympathetic fibers of the greater petrosal nerve are distributed in what nerves?
Lacrimal and pterygopalatine nerves
What are supplied by the postganglionic parasympathetic facial nerve fibers from the greater petrosal nerve?
Lacrimal, nasal, palatine, and pharyngeal glands
Preganglionic parasympathetic fibers of the chorda tympani travel through what area in the CNS?
Preganglionic parasympathetic fibers of the chorda tympani leave the temporal bone through what opening?
After leaving the temporal bone, the chorda tympani combines with what nerve?
Lingual nerve, a branch of the mandibular division of the trigeminal nerve
The preganglionic fibers of the lingual nerve after its joining with the chorda tympani reach what ganglion?
Postganglionic fibers from the chorda tympani travel to what areas?
Submandibular and sublingual glands
What other areas also receive parasympathetic information from the submandibular gland?
Glands found in the mucous membranes of the oral cavity and lingual glands on the anterior part of the tongue
Where are preganglionic cell bodies located of the glossopharyngeal nerve?
Inferior part of the salivary nucleus
Preganglionic fibers of the glossopharyngeal nerve are carried in what nerve?
Where does the tympanic nerve come off of the glossopharyngeal nerve?
Preganglionic fibers of the tympanic nerve are carried through what opening into the tympanic cavity?
In the tympanic cavity, the tympanic nerve receives postganglionic sympathetic fibers from what location and what is then formed?
Superior cervical ganglion; tympanic plexus
The preganglionic parasympathetic fibers of the tympanic nerve travel through the tympanic plexus and reform as what nerve?
Lesser petrosal nerve
The lesser petrosal nerve travels through the lesser petrosal canal to synapse where?
Postganglionic parasympathetic fibers from the otic ganglion (cranial nerve IX) are carried to what locations?
Parotid and posterior lingual glands
Postganglionic parasympathetic fibers reach the parotid gland via what nerve?
Auriculotemporal nerve, a branch of the mandibular division of the trigeminal nerve
The posterior lingual glands receive parasympathetic fibers through what nerve?
Lingual branch of the glossopharyngeal nerve
What are some examples of visceral afferent information carried in the glossopharyngeal nerve?
Special sensory (taste), afferents in the branch of the carotid sinus from baroreceptors in the carotid sinus, chemoreceptors in the carotid body
What is the preganglionic cell body location of the vagus nerve?
Posterior (dorsal) nucleus of the vagus
What is the postganglionic cell body location of the vagus nerve?
In the organs supplied or blood vessels that supply the organs (myocardium, submucosal plexus, myenteric plexus)
Preganglionic fibers of the vagus nerve are carried in what nerves to the heart?
Superior and inferior cardiac nerves
Where do preganglionic parasympathetic fibers of the vagus nerve synapse in the pathway to the heart?
In the cardiac plexus at the base of the heart and wall
Postganglionic parasympathetic fibers of the vagus nerve to the heart are carried to what locations?
Sinoatrial node, atrioventricular node, atrioventricular bundle to reach subendocardial branches (Pukinje fibers)
What effect do parasympathetic inpulses of the vagus nerve have on the heart?
Inhibit myocardium and constrict the coronary arteries