Nervous System

Created by mmlocki 

Upgrade to
remove ads

central nervous system

brain and spinal cord

Neurons

nerve cells

neuroglia

nerve glue

dendrites

branch from cell body that conducts impulses towards cell body

myelin sheath

covers the axon of some neurons

synapse

smalll space between the synaptic end fibers of one neuron and the dendrites of another

astrocytes

star shaped cells with numerous radiating fingers surrounding the outside

microglia

engulf debris, waste products and pathogens in the nerve tissue

afferent nerves

transmit impulses toward the brain and spinal cord

efferent nerves

transmit impulses away from the brain and spinal cord

vertebrae

protects spinal cord

meninges

membranes that protect and surround the cns

pia mater

innermost layer of the meninges

arachnoid membrane

provides cushioning effect for the central nervous system

dura mater

tough, white connective tissue that surrounds and supports the large venous channels carrying blood from the brain toward the heart

cerebrum

controls consciousness, memory, sensations, emotions and voluntary movements

fissures

deep groves

sulci

shallow grooves

thalamus

relay station for incoming and outgoing nerve impulses

hypothalamus

maintains homeostasis

oxytocin

manufactured in hypothalamus to help uterus contract during labor

cerebellum

essential in maintaining muscle tone and coordinating normal movement and balance

pons

aids in respiration, part of the brain stem

medulla oblongata

aids in blood pressure and heart rate regulation, part of the brain stem

spinal cord

pathway for impulses traveling to and from the brain

somatic nervous system

voluntary and can be consciously controlled

ganglia

cell bodies outside the cns that carries impulses to the involuntary muscles and glands

sympathetic

body's primitive, automatic, inborn response that prepares the body to "flight or fight"

parasympathetic

decreased heart rate

reflex

simplest form of nervous system

neuritis

inflammation of nerve

sciatica

characterized by pain radiating down buttocks, behind knee down to foot

bell's palsy

temporary or permanent unilateral weakness or paralysis of the muscles in the face

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set