Physiology 2130 Chapter Notes -Endolymph, Chemical Synapse, Timpani

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: all

Document Summary

Module 7 online notes (sec 7. 1 to 7. 45) The human body has several sensory systems that allow it to detect external changes rapidly, which include: somatosensory (touch, visual system, auditory system, vestibular system, olfactory system (smell, gustatory system (taste) Transduction of environmental information is how information from the external environment is turned into action potentials (brain"s language) Environmental stimuli (energy) like light, heat, touch, and sound must be detected by sensory receptors which convert info into action potentials. For the brain to consciously perceive environmental stimulus, the stimulus must be detected by a sensory receptor. These stimuli come in different forms, and therefor require different receptors to detect the stimulus and convert it into action potentials. Mechanical stimulus (touching) will stretch sensory receptors in the skin and open ion channels causing a depolarization of the sensory neuron which will produce an action potential.