Structural Complexity

Structural Complexity - Structural Complexity: 1. Simple -...

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Structural Complexity: 1. Simple - majority of receptors - equivalent structurally to modified dendritic endings of sensory neurons. Found in the skin mucus membranes, muscles, and connective tissue. Monitor most types of general sensory information. 2. Complex - actually sense organs - localized collections of cells working together to accomplish a specific receptive process. Associated with special senses - vision, hearing, smell, taste. Anatomy of General Sensory Receptors (Simple) General sensory receptors are involved in: tactile sensations (touch, pressure, stretch), temperature monitoring, pain, and muscle sense These receptors are either free dendritic endings or encapsulated dendritic endings. 1. Free - invade virtually all the body tissues, particularly abundant in epithelia and connective tissues. The sensory fibers have a small diameter and their distal dendrites usually have small knob like swellings. Respond to pain and temperature, but some respond to tissue movements. Some are associated with disc-shaped epidermal cells (merkel cells) that attach to the deeper
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This note was uploaded on 11/22/2011 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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Structural Complexity - Structural Complexity: 1. Simple -...

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