ZOOL342 Lecture Notes - Lecture 1: Midbrain Tectum, Bronchoconstriction, Brainstem

• School: University of Alberta
• Department: Zoology (Biological Sciences)
• Course: ZOOL342
• Professor: Declan Ali

Document Summary

Controls and coordinates our muscles and movements. Composed of two main cell types: neuron cells, glial cells. Physical support and structure; clean up the space surrounding our nerve cells; help to support cell activity; but also communicate in a fashion much like how neurons communicate. Basic trends in nervous systems: bilateral symmetry, specialized function of individual neurons, cephalization, hierarchical organization, central nervous system. Each segment (thora(cid:272)i(cid:272), a(cid:271)do(cid:373)i(cid:374)al ) houses o(cid:374)e ga(cid:374)glio(cid:374) Take a slice of an individual ganglia, see a typical structure: neurons (their cell bodies) are housed in the periphery, tracts, commissures, and neuropils lie in the central-dorsal region. Commissures are regions that allow axons to travel back and forth laterally within a ganglion (so that cells can then project out to the left and to the right) Neuropile is where synaptic connections are made; places where cells contact another cell and initiate information transfer in the next cell. Little hairs on their legs that detect wind movement.