The brainstem and cerebellum II Flashcards
GSE stands for and innervates
General somatic efferent, motor innervation of somatic musculature
SVE stands for and innervates
Special visceral efferent, ,motor innervation of brachiomeric musculature
GVE stands for and innervates
General visceral efferent, parasympayheic ganglion nuclei and motor innervation of viscera
GVA stands for and innervates
General visceral afferent, sensory input from viscera
SVA stands for and innervates
Special visceral afferent, taste
GSA stands for and innervates
General somatic afferent, general somatosensory input
SSA stands for and innervates
Special somatic afferent, special senses of hearing and balance
how many territories are in the spinal cord? How many in the brain stem?
4 in the spinal cord. 7 in the brainstem
what does the oculomotor nerve do?
it is a motor neuron for the extraocular eye muscles.
it sends parasympathetic innervation to smooth intrinsic eye muscles. It has an accessory oculomotor nucleus that innervates the iris sphincter
what does the trochlear nerve do?
it supplies the extraocular muscles as a motor neuron
where are the III, IV cranial nerves?
the oculomotor and trochlear nerves are in the mesencephalon
the trigeminal nerve does? its in the metencephalon
supplies the muscles of mastication and general sensation of head and face, it has 3 sensory nuclei
what does the abducens do? in the metencephalon
it innervates the extraocculomoter muscle
what does the facial/intermediate nerve do? its in the pons
Facial expression muscles (SVE) motor n. – Parasymp. to Glands (submandibular, sublingual & lacrimal, nose palate, pharynx) (GVE) superior salivatory n. – Taste from the tongue (SVA) n. of the solitary tract – General sensation from ear skin (GSA) trigeminal n
what does the vestibulocochlear nerve do? its in the pons/medulla
– Hearing and balance
(SSA)
Cochlear and
vestibular nn