nervous system Flashcards
nuer/o
nerve
encephal/o
brain
myel/o
bone marrow
ambul/o
to walk
-esthesia
feeling, sensation
mening/o, meningi/o
meninges
psych/o
mind
contus/o
to bruise
dys-
painful, difficult
hemi-
half
syncop/o
to cut off, cut short, faint
post-
after, behind
what are the 3 functions of the nervous system in order?
- sensory input
- integration
- motor output
what are the sensory organs?
eyes, ears, nose, tongue, skin
what does the central nervous system (CNS) include?
brain and spinal cord
what happens during sensory input of the nervous system?
electrical impulses sent from the sensory organs to CNS by sensory receptors to monitor stimuli, then sensory receptors convert the stimuli into sensory input received by the CNS
what are sensory receptors?
nerve endings in the sensory organs
what is stimuli?
changes in the external or internal (body) environment
what happens during integration of the nervous system?
CNS processes and interprets the sensory input through the sensory organs
what are the parts of the nervous system?
brain, spinal cord, nerves
what happens during motor output in the nervous system?
CNS transmit messages to effectors to generate a response to stimuli, then either voluntary or involuntary movement is outputted
what are the effectors of the nervous system?
muscles and glands
what is voluntary movement?
movement made by skeletal muscle
what is involuntary movement?
movement made by muscles and glands
