PSYC 1000 Lecture Notes - Lecture 11: Locus Coeruleus, Spinal Cord, Reflex Arc
12 Nov 2016
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Document Summary
Reflex arc consists of a sensory neuron, an interneuron in the spine, and a motor neuron to a muscle fibre. Play an important role between the sensory neurons and a motor neuron. The interneuron normally inhibits the motor neuron. Sudden activation of the sensory neuron inhibits the interneuron and the motor neuron will fire. Brain receives signal after the reflex occurs. Hindbrain: medulla, pons, cerebellum, some reticular formation, function and location. Part of the brain closest to the spinal cord. Spinal cord is attached to the hindbrain. Pathways running from the spinal cord to the hindbrain: parts of the hindbrain. Continuous with spinal cord (pathways running through it) Controls heart rate and breathing (vagus nerve) also sneezing and coughing. Overdose deaths from cns depressants (e. g. , barbiturates: this area of the brain is suppressed when people od on. Enlarged area above the medulla that sends signals to and from the forebrain and cerebellum: coordinates movement.
