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

Ans chapter 16

autonomic nervous system

What division of the ANS is said to function as “rest and digest”; as “fight or flight”? parasympathetic nervous system and sympathetic
What is meant by thoracolumbar outflow and craniosacral outflow? Because of its location, the parasympathetic system is commonly referred to as having "craniosacral outflow," which stands in contrast to the sympathetic nervous system, which is said to have "thoracolumbar outflow."
preganglionic? Are the first neurons in a two neuron chain for the ANS. They are lightly myelinated, thin fibers. SHORT
postganglionic fiber? Are the second neurons in the two neuron chain for the ANS. They are even thinner when compared to the first neuron, and are unmyelinated. LONG
somatic motor neurons?
Which fibers (pre or post ganglionic) are long or short in the sympathetic and parasympathetic NS? Parasympathetic, has longer preganglionic and short postganglionic fibers. Sympathetic, has shorter preganglionic and longer postganglionic fibers
What is the overall job of the parasympathetic system? it performs maintenance activities and conserves body energy
What is the overall job of the sympathetic system? it mobilizes the body during extreme situations
What is the most important role of the Parasympathetic system? Its the D division -digestion -defecation -diuresis (urination)
What is the most important role of the sympathetic system? Its the E division -exercise -excitement -emergency -embarrassment
In the sympathetic NS and parasympathetic NS where are the preganglionic neurons located? Parasympathetic fibers emerge from the brain and sacral spinal cord, and visceral effector. Sympathetic fibers emerge from the thoracolumbar region of the spinal cord
What is the cranial outflow of the parasympathetic division? -oculomotor (3) -facial (7) -glossopharyngeal (9) -vagus (10
What effector organs do ganglionic neurons of the ANS innervate? visceral effector organ
What are the two major neurotransmitter released by the ANS? -Acetylcholine -Norepinephrine
What distinguishes the sympathetic from the parasympathetic divisions? 1- Their unique origin sites 2- The relative length of their fibers 3- the location of their ganglia
When are the sympathetic NS and the parasympathetic NS especially active? REST AND DIGESTION- PARA FIGHT OR FLIGHT- SYMPA
What is a visceral motor neuron whose cell body is within the CNS called? PREGANGLIONIC
What are collateral ganglia”? What structures in general do neurons of the collateral ganglia supply? are sympathetic ganglia which lie between the paravertebral ganglia and the target organ. abdomen, pelvis
What organs would be affected by injury to the cervical sympathetic ganglia? -heart -pupils -salivary glands -lungs
What does the adrenal medulla secrete when stimulated by the sympathetic Ns? epinephrine (adrenaline), norepinephrine (noradrenaline), and a small amount of dopamine.
What are the effects of sympathetic stimulation? increase heart beat iris-dilate vessel- restrict adrenal medulla -secrete secret-epinephr and nonepinephri
What are sympathomimetic drugs? What kind of effects do they have? aka adrenergic drugs and adrenergic amines are stimulant compounds which mimic the effects of agonists of the sympathetic nervous system such as the catecholamines.
parasympathetic is cholergenic muscarinic nicotinic
sympathetic is adrenergic alpha beta dopaminergic
What are the effects of parasympathetic stimulation? Rest and Digest actions - accommodates = makes lens rounder heart-decrese blood vessel- dilate
Cholinergic fibers include: • somatic motor fibers • preganglionic autonomic fibers • parasympathetic fibers
Adrenergic fibers: Most postganglionic sympathetic fibers release norepinephrine. They are noradrenergic fibers.
Created by: kimberly2538
Popular Medical 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