CNS
central nervous system division
brain & spinal cord
2 divisions of the PNS
cranial nerves & spinal nerves
what is the external ear is composed of... and what are their functions?
auricle: helps sound enter the external acoustic meatus.
external acoustic meatus: lined w/ ear wax; causes eardrum to vibrate.
what is the region where the axon terminal connects w/ the skeletal muscle?
NMJ
what is the fluid found in the anterior chamber of the eye?? and what produces that fluid?
aqueous humor, and ciliary body
function: blood brain barrier
astrocytes
what is the name of the Sensory (afferent) neuron with 1 axon & 1 dendrite located in the retina & Olfactory epithelium
bipolar special sensory neurons
conduction deafness vs. sensorineural deafness?
conduct: problems with transferring sound waves
sensor: damage to cochlear hairs & cochlea
superficial to deep; name the 3 layers of connective tissue of nerves
epineurium, surrounds entire nerve
perineurium, surrounds bundles of fascicles
endoneurium, surrounds single of nerve fibers
what type of retinal cell has axons in the optic nerve (II)? and what type of retinal cell is found in the Fovea?
ganglia cells; cones
what is the name of a neuron with one axon, 2 or more dendrites that is found in the CNS and are the motor neurons in the PNS?
multipolar motor (efferent) neurons; interneurons
a type of neuroglia cell that myelinates the PNS
schwann cells
what ossicle amplifies the tympanic membrane & vibrates the cochlea?
third ossicle; stapes
what carries action potentials to axon terminals?
telodendria
What is in the neural layer of the eye that functions in light sensitivity, color, and holds the neurons that senses light?
retina, cones, rods
multipolar neuron cells located in the cerebellum
purkinje cell
what cell surrounds & supports cell bodies in the PNS?
Satellite cells
what are the two parts of the internal ear and what are their functions?
cochlea: has hair vesicles that help send neural signals to the Vestibulocochlear nerve (VIII)
semicircular canal: movement, balance, equilibrium
what stores the neurotransmitter ACh in the NMJ? and where do they get released to?
synaptic vesicles, onto the motor end plate.
within the fibrous layer of the eye is the ____ which is responsible for the whiteness of the eye, and the ____ which is transparent and allows light in.
sclera; cornea
multipolar neuron cells located in the cerebral cortex
pyramidal cells
what is the name of the neuron that is found in the PNS, and is specialized to pain, temperature, and touch? and what is its structural classification?
Pseudounipolar general sensory (afferent) neuron; single short process, that splits into 2 axons & no dendrites.
name the parts of the middle ear, and what connect the middle ear to the throat??
tympanic membrane
3 ossicles (mallus, incus, stapes)
auditory tube extends to the throat
endomysium
vascular layer: the ____ changes the pupil size while the ____ changes the lens focus?
iris, ciliary body