Abstract
ABSTRACT Melanophore contraction is not effected through a direct nervous agency, nor are the adrenal glands normally necessary to mediate the light state. The concentrated state of melanophore pigment is ordinarily due to the disappearance of the melanophore-dispersing hormone from the circulation. The rapid onset of pallor which follows electrical stimulation may be due to a vasoconstrictor effect. Intact skin in hypophysectomized lizards does not respond directly to light, but isolated skin darkens slightly in bright sunlight and becomes bright green again in diffuse light. Isolated skin responds to hormones, becoming generally dark in solutions of pituitary extract and showing the mottling reaction in solutions of adrenalin.
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.
