Unit VII - Visceral Afferents & Parasympathetics Flashcards Preview

PNS Final > Unit VII - Visceral Afferents & Parasympathetics > Flashcards

Flashcards in Unit VII - Visceral Afferents & Parasympathetics Deck (120)
Loading flashcards...
31

Preganglionic parasympathetic fibers from cranial nerve VII are carried in what two branches of the facial nerve?

Greater petrosal nerve and chorda tympani

32

The greater petrosal nerve leaves the facial nerve at what ganglion?

Geniculate ganglion

33

The greater petrosal nerve re-enters the petrous part of the temporal bone through what opening?

Foramen lacerum

34

The greater petrosal nerve travels in the pterygoid canal and ultimately joins with what ganglion?

Pterygopalatine ganglion

35

Postganglionic parasympathetic fibers of the greater petrosal nerve are distributed in what nerves?

Lacrimal and pterygopalatine nerves

36

What are supplied by the postganglionic parasympathetic facial nerve fibers from the greater petrosal nerve?

Lacrimal, nasal, palatine, and pharyngeal glands

37

Preganglionic parasympathetic fibers of the chorda tympani travel through what area in the CNS?

Tympanic cavity

38

Preganglionic parasympathetic fibers of the chorda tympani leave the temporal bone through what opening?

Pterygotympanic fissure

39

After leaving the temporal bone, the chorda tympani combines with what nerve?

Lingual nerve, a branch of the mandibular division of the trigeminal nerve

40

The preganglionic fibers of the lingual nerve after its joining with the chorda tympani reach what ganglion?

Submandibular ganglion

41

Postganglionic fibers from the chorda tympani travel to what areas?

Submandibular and sublingual glands

42

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

43

Where are preganglionic cell bodies located of the glossopharyngeal nerve?

Inferior part of the salivary nucleus

44

Preganglionic fibers of the glossopharyngeal nerve are carried in what nerve?

Tympanic nerve

45

Where does the tympanic nerve come off of the glossopharyngeal nerve?

Inferior ganglion

46

Preganglionic fibers of the tympanic nerve are carried through what opening into the tympanic cavity?

Tympanic canaliculus

47

In the tympanic cavity, the tympanic nerve receives postganglionic sympathetic fibers from what location and what is then formed?

Superior cervical ganglion; tympanic plexus

48

The preganglionic parasympathetic fibers of the tympanic nerve travel through the tympanic plexus and reform as what nerve?

Lesser petrosal nerve

49

The lesser petrosal nerve travels through the lesser petrosal canal to synapse where?

Otic ganglion

50

Postganglionic parasympathetic fibers from the otic ganglion (cranial nerve IX) are carried to what locations?

Parotid and posterior lingual glands

51

Postganglionic parasympathetic fibers reach the parotid gland via what nerve?

Auriculotemporal nerve, a branch of the mandibular division of the trigeminal nerve

52

The posterior lingual glands receive parasympathetic fibers through what nerve?

Lingual branch of the glossopharyngeal nerve

53

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

54

What is the preganglionic cell body location of the vagus nerve?

Posterior (dorsal) nucleus of the vagus

55

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)

56

Preganglionic fibers of the vagus nerve are carried in what nerves to the heart?

Superior and inferior cardiac nerves

57

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

58

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)

59

What effect do parasympathetic inpulses of the vagus nerve have on the heart?

Inhibit myocardium and constrict the coronary arteries

60

Preganglionic vagal fibers are carried in what branches to the lungs?

Anterior and posterior bronchial branches