ANP 1106 Chapter Notes -Paresthesia, Vestibulospinal Tract, Corticobulbar Tract

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jacqueline Carnegie

Document Summary

Sensory receptors are specialized to respond to changes in their environment (stimuli) Activation of a sensory receptor by an adequate stimulus results in graded potentials that trigger nerve impulses along the afferent pns fibres that lead to the. Sensation is the awareness of the stimulus and perception is the interpretation of the meaning of the stimulus. The class name typically indicates the type of stimulus: mechanoreceptors. Respond to mechanical force such as touch, pressure (including blood pressure), vibration, and stretch: thermoreceptors. I. e. : molecules smelled or tasted, changes in blood or interstitial fluid chemistry, etc: photoreceptors. I. e. : in the retina of the eye: nociceptors. Respond to potentially damaging stimuli that result in pain. I. e. : extreme heat / cold, excessive pressure, inflammatory chemicals, etc. , which are all interpreted as painful. These signals stimulate subtypes of thermoreceptors, mechanoreceptors, and chemoreceptors. Mostly found near or at the body surface. I. e. : touch, pressure, pain, and temperature receptors in the skin.