Sunday, January 17, 2010

All of the following are derivatives of the neural crest, EXCEPT:

All of the following are derivatives of the neural crest, EXCEPT:

A. Melanocyte
B. Adrenal Medulla
C. Sympathetic Ganglia
D. Cauda Equina

Answer is D. Cauda Equina

The following are structures derived from the neural crest:
  1. Neurons:  
    • Spinal posterior nerve root ganglia (dorsal root ganglia)
    • Sensory ganglia of the 5th, 7th, 8th, 9th and 10th cranial nerves
    • Sympathetic ganglia
  2. Pia mater and Arachnoid mater: Not Dura mater
  3. Schwann cells
  4. Adrenal Medulla, Chromaffin tissue
  5. Melanoblasts, mesenchyme of dental papilla

  Hence, only Cauda Equina stands out among the options as not being a derivative of the neural crest.



More details about the neural crest is available at Developmental Biology by Scott F. Gilbert 6th Edition
Posted by
Labels: ,

1 comment:

  1. AnonymousAugust 8, 2012 at 10:48 AM

    It's difficult to find educated people on this subject, but you sound like you know what you're talking about!

    Thanks
    Check out my page Adrenal Fatigue Adrenal Fatigue

    ReplyDelete

Subscribe to: Post Comments (Atom)