CAS BI 106 Study Guide - Midterm Guide: Choroid Plexus, Neuroglia, Schwann Cell
9 Feb 2018
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Visceral- pertaining to the guts, organs in the abdominal, pelvic cavity. At the end of the axon, it branches to create several axon terminals. Each of them can have a synapse with an individual muscle cell- many connections with just 1 neuron. Interneuron or relay neuron is within the cns and connects the sensory neuron to the motor neuron. Glial cells are not involved in communication. Many different types of glial cells: in cns, astrocytes- wrap around blood vessels within the brain and prevent leakage of chemicals. Diffusion is slower in the brain and certain chemicals are prevented from every leaving blood and entering the brain tissue forever. Blood-brain barrier is composed of astrocyte membranes. (look at slide) this is why most brain diseases have very limited therapeutic medicines etc. Those layers slow down rate of diffusion, and allows the axons to work much faster- if (cid:449)rap of fat (cid:449)as(cid:374)"t there- it would be slower.
