Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Nervous System

central nervous system includes brain & spinal cord; functions include: command center, interpret incoming sensory info, & issue outgoing instructions
peripheral nervous system spinal nerves carry impulses to & from the spinal cord & cranial nerves to carry impulses to & from the brain; functions: serve as communication lines among sensory organs, the brain, & glands or muscles
sensory (afferent) division consists of nerve fibers that carry info to the cns from sensory receptors located around the body; includes somatic sensory fibers & visceral sensory fibers
motor (efferent) division carries impulses from the cns to organs, muscles and glands; impulses activate muscles & glands, that is they cause a response
sense organs skin, skeletal muscles, joints, & organs
somatic division voluntarily controlled like skeletal muscles
autonomic division involuntarily controlled like the heart muscle
parasympathetic division referred to as the "resting & digesting" system; allows the body to unwind & conserve energy
sympathetic division referred to as the "fight or flight" system; mobilizes the body during extreme situations such as excitement, exercise, & fear
astrocyte abundant star shaped; numerous projections have swollen ends that cling to neurons; form living barrier between capillaries & neurons; help determine capillary permeability; control chemical environment of brain; found in cns
microglial cell spider-like phagocyte; monitor health of neurons; dispose of debris like dead brain cells & bacteria; found in cns
ependymal cells lines cavity of brain & spinal cord; beating cilia helps circulate cerebrospinal fluid; found in cns
oligodendrocytes wrap their flat extensions tightly around nerve fibers; produces fatty insulating coverings called myelin sheaths; found in cns
satellite cells act as protective, cushioning cells; found in pns
schwann cells form myelin sheaths around nerve fibers; found in pns
nucleus control center of the cell body of the neuron
mitochondrion energy providing organelle in the cell body of the neuron
dendrite neuron processes that convey incoming messages toward cell body
cell body part of neuron that contains organelles surrounded by cytoplasm
nissl substance rough ER found in the cell body of a neuron
axon hillock cone like region of a neuron where axon arises
neurofibrils part of the schwann cell that is external to the myelin sheath; "neuron husk"
axon neuron presses that carry messages away from the cell body
collateral branch occasional protrusion along an axon
node of ranvier gaps formed from individual schwann cells forming myelin sheaths along the axon
axon terminal end of axon that forms many extensions that contain time vesicles that contain neurotransmitters
Created by: kajones97



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards