Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Your email address is only used to allow you to reset your password. See 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

.spinal nerves

how many spinal nerves are there 31 Pairs; 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal
Nerve divisions after leaving intervertebral foramen dorsal ramus, ventral ramus, meningeal ramus
dorsal ramus innervates muscles and joints of region
meningeal ramus re-enters vertebral canal
2 roots dorsal and ventral
dorsal roots afferent fibers from peripheral receptors
ventral roots efferent fibers
ventral rami split and merge these divisions form nerves pelxuses
nerve plexuses plexuses gives rise to branches or peripheral nervous system, most divisions carry motor and somatosensory fibers
plexuses parts cervical, brachial, lumbar, sacral, coccygeal
dermatomes sensory input from defined areas of the skin
characteristics of reflexes patterned response to a stimulus, may cause muscle contraction/glandular secretion
5 essential components of the reflex arc receptor, sensory neuron, integration center, motor neuron, effector organ
types of reflex arcs monosynaptic and polysnyaptic
monosynaptic reflex arcs knee-jerk reflex
polysynaptic reflex arcs flexor or crossed extensor reflexes
stretch reflex muscle is stretched which activates muscle spindles, impulses are sent through afferent fibers and then synapses
how does a a stretch reflex synapse through alpha motor neurons and interneurons
alpha motor neurons stretched muscle stimulated to contract
interneurons exhibits reciprocal inhibition
flexor and crossed extensor reflexes more processing occurs, involves coordination by cerebellum and cerebral cortex
Created by: kmartino91
Popular Biology sets




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