Abstract
The initial axon segment (IS) of spinal alpha-motoneurons has been studied in single and serial sections during the first three postnatal weeks in the cat. It was found that boutons of different ultrastructural types made synaptic contact with the IS during the first postnatal week but during the second postnatal week the boutons disappeared. The diameter of the IS was not observed to change from the first to the second postnatal week but a significant increase was noted from the second to the third week. The length and general ultrastructural appearance of the IS did not change significantly over the postnatal period studied. The results are discussed in relation to some aspects of the functional development of spinal motoneurons during the early postnatal period.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
