BIOL 3P34 Lecture Notes - Lecture 2: Plantar Reflex, Axon Hillock, Resting Potential
16 Sep 2016
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Document Summary
Electrical signals flow in a predictable and consistent direction and only in that direction. There are functional differences among neurons: not all neurons have axons, invertebrate neurons don"t have distinct input/output regions, some dendrites can fire aps. Specificity of a message is achieved by: pathway, localization of function. Neurons have different functions because of the connections they make: no cytoplasmic continuity, no random connections, specialized connection patterns. Specialized morphological structure between 2 synaptic partner cells. Cns of mammals has 10,000 synapses formed in 15 mins. *during development its essential for growing axons of neurons to find their way to the correct region of the brain. *once they are there they identify and connect with the correct targets by means of neuronal. Is responsible for selecting target cells during development. *2 non-synaptic partners, do not connect in the intact brain, they send repulsive messages to each other.
