BIOL 3060 Lecture Notes - Lecture 5: Chromaffin Cell, Vagal Tone, Cranial Nerves
Document Summary
The cortex regulates fluids in the body (glucocorticoids). The medulla has glandular neuronal cells (the post ganglionic nerve cells in this region are chromaffin cells) they secrete adrenalin goes to blood (exercise increase adrenalin (cid:272)a(cid:374)"t sleep(cid:895) Reflexes: baroreceptors: sensory neurons in the big blood vessels, they make sure that the blood pressure in the arteries is constant when at rest. The somatic nervous system: voluntary, motor system (autonomic, is involuntary, somatic fibers are the spinal nerves (drive skeletal muscles). All animals above that have similar neuronal structure. During embryonic development the notochord is common between all. When the different regions of the brain decide to do something, they send signals to multiple part of the brain including the cerebellum (in the back of the brain, has more neurons than the rest of the brain. It is an integrator, it receives info from the volition centers first. It makes sure that the right sequence of signals occurs.
