HTHSCI 1H06 Lecture Notes - Lecture 7: Autonomic Nervous System, Somatic Nervous System, Sympathetic Nervous System

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1H06
• Professor: Peter Helli

Document Summary

Somatic sensory neuron: convey input from receptors for somatic senses (tactile, thermal, pain, and proprioceptive sensations) and from receptors for the special senses (sight, hearing, taste, smell, and equilibrium) Somatic motor neuron: innervates skeletal muscles; the effectors of the somatic nervous system. When a somatic motor neuron stimulates the muscle, it contracts the effect is always excitation. Includes both sensory and motor neurons: autonomic sensory neuron: Biofeedback: monitoring devices display information about a body function such as heart rate or blood pressure, enhances the ability to learn such conscious control. Unlike somatic output (motor), the output part of the ans has two divisions: Sympathetic division: increased rate of nerve impulses from the sympathetic division increases heart rate: parasympathetic division: increased rate of nerve impulses from the sympathetic division decreases heart rate. Each division of the ans has two motor neurons.