Autonomic Nervous System: Sympathetic vs Parasympathetic, Animation



(USMLE topics, nervous system) The divisions of the ANS: Sympathetic, SNS, versus parasympathetic, PSNS. This video is available for instant download …

34 responses to “Autonomic Nervous System: Sympathetic vs Parasympathetic, Animation”

  1. Amazing explanation. Liked. However one small confusion.

    As you say there are only 2 neurons (pre and post ganglionic) in between the CNS and the Effector organs, how it's possible for just two microscopic neurons to cover that distance? Please elaborate.

  2. What is difference between involuntarily reflexes and involuntarily sympathetic action? For example how you determine that increas of heart beat is sympathetic but increase of secretion of salivia when seeing food us a reflex?

  3. If the sympathetic nervous system comes into play during fight or flight situations why does it have shorter myelinated axons and longer post ganglionic unmyelinated axon? Since we already know that myelinated axons transmit impulses much faster shouldnt it be the other way around?

  4. Omg where were u when I was in clg I just did spoon feeding in order to clear the exam … But didn't understand this process clearly today I got all this

  5. Firstly the video was great!! I have a question : in the video you mentioned tha they are some organs that are receiving inputs only from one system.My biology books says that 2 examples are adrenal medulla and also the liver(that they recieve inputs only from the sympathetic) but this seems to me very strange(especially for the liver) .Is there a change that it has a typo mistake? What's truth? Thank you!!

Leave a Reply

Your email address will not be published. Required fields are marked *

*