Nerves Flashcards
t/f:
a nerve may consist of sensory or motor nerves
false
nervous system has a built in short cut that takes in the spinal cord between sensory neurons, as it enters the spinal cord and the motor neuron as it leaves the spinal cord. the shorter neuron is called
intercalated neuron
t/f:
the autonomic nervous system is part of the central nervous system
true
how many impairs of spinal nerves
31
division of ANS is for fight or flight
sympathetic nervous system
parasympathetic nerves are referred to as
craniosacral outflow
t/f:gray matter of spinal cord consists of cell bodies of motor neurons
false
divisor of V purely sensory
ophthalmic and maxillary division
t/f:
white matter of spinal cord consists of myelinated axons of both motor and sensory neurons
true
nerve innervates posterior belly of digastric muscle
facial
dorsal root ganglion collection of cell bodies of the sensory neurons entering spinal cord
true
supraorbital notch allows exit of supraorbital nerve, a branch of which division of V
ophthalmic division
muscles of mastication innervated by
V cranial nerve (trigeminal)
t/f:
point where dorsal and ventral roots meet is beginning of spinal nerve
true
nerve supplies max ant teeth
ant sup alveolar nerve
CN only has motor components
VI, abducens nerve
ophthalmic division of V exits skull through
superior orbital fissure
nerve provides taste to ant 2/3 of tongue
VII, facial
posterior superior, middle superior, and anterior superior alveolar nerves branches of
maxillary division (V3)
lesser and greater palatine nerves supply
soft and hard palate
chorda tympani branch of
VII facial
CN provides general sensation to tongue
trigeminal and glossopharyngeal
ANS has motor fibers to
smooth muscle, cardiac muscle, glands
CN has parasympathetic component to lacrimal gland
facial
type of neuron found in ANS
preganglionic and postganglionic
nasopalatine nerve exits
incisive foramen
CN innervates sensation for all teeth
trigeminal (V)
nerve n does not help innervate lacrimal gland
supraorbital
CN innervates intrinsic and extrinsic muscles of tongue
hypoglossal (XII)
posterior superior alveolar nerve branch of which division of V
maxillary
nasopalatine nerve comes from the ____ nerve, a branch of _____
sphenopalatine
V2
CN provides general sensation for root of tongue and epiglottis
vagus nerve X
division of ANS called vegetative system
parasympathetic
CN innervates muscle of larynx
Vagus X
nerve exits through infraorbital foramen
infraorbital nerve
t/f:
ant 2/3 of tongue supplies taste sensation by glossopharyngeal nerve
false
nasociliary nerve branch of
V1, ophthalmic division
mylohyoid muscle supplied by branch of the
inferior alveolar nerve
pterygopalatine ganglion sends parasympathtetic innervation to
lacrimal gland
chorda typanti supplies
anterior 2/3 of tongue
motor: mylohyoid muscle
trigeminal
parasympathetic: parotid gland
glossopharyngeal
taste: posterior one 3rd of tongue
glossopharyngeal
motor: muscles of mastication
trigeminal
sensory: skin in front of ear
trigeminal or vagus
motor: stylohyoid muscle
facial
taste: root of tongue
vagus
motor: posterior belly of digastric muscle
facial
parasympathetic: submandibular gland
facial
motor: anterior belly of digastric
trigeminal
parasympathetic: lacrimal gland
facial
motor: stylopharyngeus muscle
glossopharyngeal
sensory: general sensation to epiglottis
vagus
motor: tensor veli palatini
trigeminal
taste: ant 2/3 of tongue
facial
motor: tensor typani muscle
trigeminal
sensory: general sensation of pain, pressure, and heat/cold for posterior 1/3 of tongue
glossopharyngeal
sensory: all teeth
trigeminal
motor: stapedius muscle
facial
sensory: skin of face and front of head
trigeminal
“afferent” means
toward the brain/sensory
which does posterior superior alveolar nerve innervate
not skin of nose
cn VII provides taste sensation to
anterior 2/3 of tongue
lesser petrosal nerve of IX supplies
parotid gland
parotid gland supplied by a nerve from the
optic ganglion
components of craniosacral outflow
S2 and S3
parasympathetic fibers come off brain with all of what CN?
III, IX, X
nerve supply to max central incisors
nasopalatine nerve
nerve supply to mucosa of lower lip
mental nerve
nerve supply to lingual gingival max ant incisor
nasopalatine nerve
clinical signs you would find in stimulation of sympathetic nervous system
increased heart rate
increased respiration
decreased blood supply to skin
decreased blood supply to GI tract
branches of max division of V
descending palatine
pterygopalatine
infraorbital nerve
buccal nerve branch of
V3 mandibular
