Nervous system Flashcards
what is part of the central nervous system
everything inside the skull and spine
what happens if the CNS is damaged
it cant repair itself leading to neurodegeneration
what is part of the peripheral nervous system
everything out of the spine and skull
what happens if the PNS gets damaged
it is able to regrow itself unlike the CNS
the PNS can be seen as afferent and efferent system what does this mean
it can be seen as a system of inputs (afferent) and outputs (efferent)
what movement does the autonomic system control
unconscious movement
what is the parasympathetic system for
rest and digest
what is sensory input for
receptors monitor and take in stimuli which sends info to afferent nerves
what is integration for
processing the information and deciding on what move to perform
what is motor output for
effector organs activated and the decision which was made put into place
what are neurones
electrically excitable cells which communicate to other cells via synapses
what are glial cells
non neuronal cells that maintain homeostasis from myelin and protect for neurons
what are astrocytes
type of glial cell, maintain brain environment, regulate chemicals and blood flow
what are oligodendrocytes
type of glial cells, form myelin sheath on axons in CNS
what are Schwann cells
type of glial cell, allow quick transfer of info
what are microglial cells
type of glial cell, aid with brains immune system, infection…
what are ependymal cells
type of glial cell, prevent outside stuff from entering the brain
what is pons for
relay info from forebrain to cerebellum
how is the human brain different from animals
our forebrain has grown like no other but our part for smell is a lot smaller
what is the midbrain for
using information from the surroundings
what movement does somatic system control
voluntary movement
what is basal ganglia for
movement regulation
what is the sympathetic system for
fight or flight
what does sensory system take in
visual, olfactory, gustatory, tactile sense, auditory and lesser known proprioception and vestibular
what is the cerebellum for
maintain balance and posture
what is cerebral cortex for
key role in everyday action
what are the 2 major cell types
neurons and glial
what is the medulla for
basic functions, reflexes
what is the thalamus for
takes info and passes to the cortex
