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NS Quiz 1

Nucleus, cortex- sheet, lamina-layer, column CNS gray matter, neuronal cell bodies
Tract, fasciculus, lemniscus, capsule, peduncle, commisure CNS white matter, axons
Ganglion PNS, neuronal cell bodie ie. cranial nerve ganglion, posterior root ganglion
Peripheral nerves, rami, roots Nerve Fibers, PNS ie. cranial nerves
Cerebrum or brain houses the.. hemispheres, diencephalon
Brainstem and the Cerebellum houses the.. midbrain, pons, medulla, cerebellum
Frontal lobe fx Motor, executive functions, language
Parietal lobe fx Sensory, cognition.language processing
Temporal lobe fx hearing, language, learning and memory
Occipital Lobe fx Vision
Left Brain vs. Right Brain Left- logic, right-creative
Diencephalon houses the: what are its features Thalamas: collections of nuclei ant: motor relay post: sensory relay Hypothalamus: hormones, homeostatis, visceral activity
All nerve fibers that arise from one spinal cord segment innervate how many dermatomes 1
Pseudounipolar somatic, visceral Cell bodies part of PNS (one exception)
Bipolar olfactory, visual, auditory, vestibular PNS cell bodies
Multipolar Somatic/automatic, interneurons, cell bodies part of CNS or PNS
depolarizing, hyperpolarizing de-more positive, hyperpolorazing-more negative
Absolute refractory period Relative refractory period A: AP cannot be generated Na channels inactivated R: AP can be generated but stumuls threshold increased
Local potential Action Potential Less over time, graded response: amplitude and duraction is proportional to stimulus intensity, excitory and inhibitory A: all or nothing, requires threshold stimulus, always excitory
plasticity modification of a synapse, normal for them to go away over time, modifications throughout life short term vs. long term
habituation decrease in response to a repeated, benign stimulus, can happen short term/long term new ring tone in environment: new distracting, always happens not as distracting
PNS glia and CNS glia PNS: Schwann cells CNS: astrocytes, oligodendrocytes, microglia
Schwann fx myelinate PNS axon, surround unmyelinated axons
Astrocytes fx guide neuronal migration during development, response to injury, trophic support for neurons
oligodendrocytes fx myelinate CNS
microglia fx: sense changes in environment, change morphology in response to injury
Created by: kmackdaddy