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afferent sensory, detect changes that occur inside and outside the body
efferent motor, signals to muscles and glands to cause an effect
somatic nervous system conscious or voluntary control
autonomic nervous system involuntary or automatic control
Central Nervous System (CNS) brain and spinal cord
Peripheral Nervous System (PNS) kidney and adrenal glands
dendrites transmit impulses to cell body
axon carries impulses away from body, cannont be replaced
myeline sheath conduct nerve impulses than axons that lack myelin sheath
neurilemma outermost layer of axon
neurogila supporting structure of nervous tissue
gila cells provide support and protection, if destroyed can replace themselves
cerebrospinal fluid (CSF) protection of brain and spinal cord
meninges three membranes; protect brain and spinal cord
brainstem pons, medulla oblongata, connect cerebrum with spinal cord
chemoreceptors nerve endings that detect chemicals
thermoreceptors under skin, detect changes in temperature
photoreceptors responsible for vision
sclera tough white membrane covering much of eyeball
lacrimal pertaining to tears
cochlea in inner ear, contains receptors that enable us to hear
semicircular canals maintain a sense of balance
epidural hematoma blood accumulates in epidural space, space outside dura matter
subdural hematoma accumulation of blood beneath dura matter
intracerebral hematoma bleeding occurs within brain
cerebrovascular accident (stroke) normal blood supply to brain is disrupted
transient ischemic attack (TIA) precedes stroke, brief interruption in cerebral blood flow
psychosomatic pertaining to mind-body relationship or having physical symptoms of emotional origin
psychosis major mental disorder, gross impairment in reality testing and often characterized by inappropriate mood and diminished impulse control
schizophrenia distortion of reality, disorganization and fragmentation of thought and emotional reaction
neurosis psychiatric disorders
analgesics agents that relieve pain without loss of consciousness
hypnotics sedatives, produce calming effect
Created by: Hayzelley