1. sensory: there are sensory receptors that can detect interal & external stimuli

2. integration: wherein the NS can process sensory info by analyzing the info and storing it.

3. motor: involved responding to integrative decisions.

- neurons that connect with other neurons

- neurons that analyze sensory info and store it

dendrites (bring impluses to the cell body)

cell body

axons (take impulses away from the cell body)

most numerous type of neuroglia cell

helps to create an optimal chemical environment for proper generation of neurons

neuroglia cells that form and maitain the myelin sheath around CNS axons

they speed the rate of transmission of impluses

they perfrom phagocytosis;

they eat microbes if there is a threat

lines the verticles of the brain and the central canal of the spinal cord

also responsible for formation of CSF

have several dendrites and one axon

they are the majoirty of neurons in the CNS

one dendrite and one axon;

found in the retina, inner ear, and olfactory are of the brain

begin in the embryo as bipolar neurons

later, two processes fuse into one process that divide two branches a short distance away from the cell body

the capability of the nervous system to constantly change, grow and remap itself over the course of one's life;

includes: sprouting of new dendrites, synthesis of new proteins, and changes in synaptic contacts with other neurons

dura mater

arachnoid

pia mater

falx cerebri

tentorium cerebelli

falx cerebelli

grey matter axons are...

white matter axons are...

grey matter axons are not myelinated

white matter axons are myelinated

association fibers

commissural fibers

projection fibers

1. sensory area

2. motor area

3. association area

a. primary somatosensory area (aka postcentral gyrus): receives impulses from somatic sensory receptors for touch, pain, and temperature

b. primary visual area: involved in visual perception

c. primary auditory area: interprets the basic characteristics of sound like pitch and rhythm

d. primary gustatory area: taste

e. primary olfactory area: smell

a. primary motor area: controls voluntary contractions of specific muscles

b. area 44 and area 45 (Broca's area): production of speech

a. somatosensory association area

b. visual association area

c. auditory association area

d. common integrative area

e. premotor area

f. frontal eye field area

g. language area

integrates and interprets sensations (helps you determind exact shape, size, texture without looking)

it is the gnostic area and it receives impulses from other association areas to form a common thought

ex: looking at an apple- gnostic area gathers info about the apples color, taste, shape, size, smell

is controls the voluntary scanning movements of the eyes

(ex: driving; reading)