identification of cremaster motoneurons by retrograde labelling from the gf nerve revealed these neurons to be located in the l1 to l2 spinal cord segment , to have prominent rostrocaudally oriented dendritic aborizations and to receive a rich innervation by fibers containing sp , thyrotropin-releasing hormone ( trh ) or met-enkephalin ( met-enk ) .
C0027882
neurons
C0011305
dendritic