Module 6 Flashcards
what are the two divisions of the PNS
sensory (afferent) and motor (efferent)
what are the two divisions of the motor (efferent) nervous system?
somatic (voluntary motor control of skeletal muscles) and autonomic (involuntary motor control of smooth and cardiac muscle)
what are the two divisions of the autonomic nervou system?
sympathetic (fight or flight)
parasympathetic (rest and digest)
where do cranial nerves come from?
cranial nerves emerge in pairs from the brain and brain stem
How many pairs of cranial nerves are there?
TWELVE!!!
What is a good way to remember the 12 cranial nerves?
On Occasions, Our Trusty Truck Acts Funny - Very Good Vehicle Any How
What are the Twelve cranial nerves?
CN I - olfactory CN II - optic CN III - oculomotor CN IV - trochlear CN V - trigeminal CN VI - abducens CN VII - facial CN VIII - vestibulocochlear CN IX - glossopharyngeal CN X - vagus CN XI - accessory CN XII - hypoglossal
function of the olfactory nerve?
smell
function of the optic nerve?
vision
which three nerves are involved in movement of the eye?
- oculomotor nerve
- trochlear nerve
- abducens nerve
function of the trigeminal nerve?
sensory = forehead, eye, upper/lower jaw motor = mastication
function of the facial nerve?
sensory = anterior 2/3 of the tongue, parasympathetic innervation of tear and salivation glands motor = facial expression
function of the vestibulocochlear nerve?
equilibrium and hearing
sensory functions of the glossopharyngeal nerve?
1) sensory innervation of the pharynx
2) posterior 1/3 of the tongue
3) parasympathetic innervation of salivary glands
motor function of the glossopharyngeal nerve?
pharynx muscles
sensory functions of the vagus nerve?
innervation of the larynx, parasympathetic innervation of the thoracic and abdominal organs
motor functions of the vagus nerve?
pharynx and larynx muscles
function of the accessory nerve?
trapezius and sternocleidomastoid muscles
function of hypoglossal nerve?
tongue
how many pairs of spinal nerves are there?
31
how are spinal nerves formed?
by the union of the posterior (sensory) and anterior (motor) roots of the spinal cord
how are spinal nerves classified?
letter = region of spinal cord number = level
Where is the C8 located?
between C7 and T1
in the cervical region, the nerves are labelled _____ their corresponding vertebrae
above