NEUROSC M101A Lecture 3: Lecture 3 Part I Somatic Sensations and Receptors
Document Summary
Lecture 3 part i somatic sensations and receptors. Unlike the other senses in specialized organs, somatic sensors are in the skin, covering the entire body. At least 4 senses (by type of stimuli) Proprioceptors - on body position, and position of limbs. Nociceptors - polymodal - can be activated by different types of stimuli. Specialized structure at the end of the nerve. Stimuli can cause change in receptor, deformation of capsule. Once channel is open - calcium and sodium and end, leading to action potential if stimulus is strong enough. Unlike the other senses in specialized organs, somatic sensors are in the skin, covering the. Once channel is open - calcium and sodium and end, leading to action potential if. Stretching or pulling on the membrane of the fibers causes the depolarization. Deep in the dermal part of the skin. Most common in glabrous skin (e. g. palm of hand), hairless areas. 11/27/15 5:29 pm went to dinner 11/27/15 7:04 pm.
