Biology 1201A Lecture Notes - Lecture 1: Motor Neuron, Forebrain, Hypotonia

• School: Western University
• Department: Biology
• Course: Biology 1201A
• Professor: Richard Gardiner

Document Summary

Functions of the nervous system: can be divided into basic (lower) functions and higher (complex) functions, patterns of abnormal functions are called syndromes. Basic functions are associated with the senses, movement, and automatic function. Three main categories: motor: control of skeletal muscle. These functions cause movement, tone, and posture: sensory: deals with all senses (more than 5! ), anything that the nervous system can detect: automatic: don"t require conscious involvement includes reflexes, control of some body systems, etc. aka. Sweating: higher functions are performed by parts of the brain. Lower motor neurons will typically have many neuromuscular junctions: when the neuron fires, all of these skeletal cells are activated and contracted together, the somas of lmns are in the spinal cord or in the brain stem. Tone is how much a muscle contracts when you"re trying to relax it. (ex: remember the old picture of a doctor and patient.