ANAT 102 Lecture Notes - Lecture 16: Anesthetic, Myelin, Cranial Nerves

• School: Drexel University
• Department: Anatomy
• Course: ANAT 102
• Professor: Michael Kirifides

Document Summary

Loss of ability to feel pain when conscious. The conscious or subconscious awareness of changes in the external or internal environ. Sensory impulses that reach the cerebral cortex help us become aware of the stimuli and locate the sensation of touch, pain, hearing or taste (perception) General senses: somatic senses, tactile sensations (touch, pressure, vibration, itch, thermal sensation (warm and cold, pain, proprioceptive, visceral senses, pressure, stretch, chemicals, nausea, hunger and temp within organs. Types of sensory receptors: microscopic structures, free nerve ending sensory receptors. Pain, temperature, tickle, itch: encapsulated nerve ending sensory receptors. Touch, pressure, vibration, proprioception, skin stretching: separate cell sensory receptors. Taste buds (gustatory receptor cells: location of the receptors & location of the stimuli that activates them, type of stimulus detected. Produced by the free nerve endings, encapsulated endings and olfactory receptors. Triggers nerve impulses/ action potentials in the axon of 1st order neuron. Trigger release of neurotransmitter which diffuse and produce a postsynaptic potential.