Take the 2-minute tour ×
Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. It's 100% free, no registration required.

It has been my thought for a long time that that is the case but I am unsure about it now, since the parasympathetic tract of colon sigmoideum does not seem to have connection with CN 10. It connects with pelvic splanchnic nerves. Discussion about it here.

If there is no connection from pelvic splanchnic nerves to CN 10, like CN 10 running within the nerves, then my though must be wrong.

Are CN3, CN7, CN9 and CN10 the only Parasymphatetic Cranial Nerves?

share|improve this question

1 Answer 1

up vote 4 down vote accepted

Yes, only III, VII, IX, and X are cranial nerves that carry parasympathetic autonomic neurons. The key phrase is "cranial." Pelvic splanchnic nerves also carry parasympathetics, but they arise from the pelvis, not the brain.

share|improve this answer
    
Thank you! I was confused by the definition of the word itself "cranial". Parasympathetic Cranial Nerve only means parasympathetic neurons that arise from the brain. So the elements of brainstem like the lower parts of Medulla Oblongata still belongs to the brain. –  Masi Apr 3 '12 at 18:22

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.