ZOO 3050 Lecture Notes - Lecture 24: Binocular Vision, Herbivore, Meiosis
5 Feb 2018
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Document Summary
Eye migration and neuronal changes: binocular vision needed in frog, more 3d landscape and more predators, need overlapping field of view. Other nervous system changes during metamorphosis: motor neurons, jaw to muscle, important when diet changes from carnivorous to herbivorous, behavior changes, critical when understanding regulation metamorphosis. In this transition, the larval behavior is abandoned: swimming, locomotion, tongue muscles lateral line system. Anuran metamorphosis is controlled by ths induction of: growth, death, remodeling, respecification. Thyroid hormone signaling in vertebrates: primary function of thyroid is to collect iodine, activates nuclear hormone receptiors hypothalamus. Thyroid hormone receptors (thr: thr is a nuclear hormone receptor (located within nucleus rather than cell membrane, it is a transcription factor. 4 types of regeneration: stem cell mediated, epimorphosis, a form of de-differentiation, morphallaxis, repatterning of existing tissue, compensatory, doesn"t involve stem cells at all, get cell divisions but don"t get replacement of cells from stem cells.
