PNB 2264 Lecture Notes - Lecture 14: Axon Guidance, Olfactory Bulb, Macrophage
16 Aug 2018
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Document Summary
Maintenance of homeostasis keeping you alive. Cell-to- cell communication: control and sensory; inside and outside of ns. Cns central brain and spinal cord: protected by bone, cfs, afferent neurons inward, efferent neurons outward, somatic and autonomic. Pns everything else: not protected by bone, more easily damaged, funny bone, ganglia collection of cell bodies, sensory cells transduce information. Nerves collection of axons like a coaxial cable. Afferent (inward) and efferent (outward: 12 cranial and 31 spinal. Autonomic (involuntary) and somatic (voluntary: parasympathetic, sympathetic, motor neurons. >50% of volume and supporting role internal environment: communication, guiding axons to right targets, establish synapses, blood-brain barrier, remove debris, produce cfs and myelin, generate electrical currents, take up nt and ions. The cns is composed of the brain/spinal cord. Cns/pns collect information for the brain to integrate (sum up) information and make decisions to support homeostasis: what keeps us alive. Surround: make sure neurons stay in correct.
