Chapter 49 Skin Skeletal

Biology, 7th Edition (Book & CD-ROM)

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Chapter 49 Sensory and Motor Mechanisms I. Sensory receptors A. Introduction 1. Sensation- action potentials that reach the brain via sensory neurons. 2. Perception- constructions formed in the brain and do not exist outside of it a. Interpreted sensations b. Taste, smell, sound, color 3. Sensory reception- detection of a stimulus by sensory cells 4. Sensory receptors- sensory cells 5. Exteroreceptors- sensory receptors that detect stimuli coming from outside the body 6. Interorectpors- detect stimuli coming from within the body B. Functions performed by sensory receptors 1. Sensory transduction 2. Amplification 3. Transmission 4. Integration C. Types of Sensory Receptors 1. Mechanoreceptors a. Sense physical deformation b. Pressure, tough, stretch, motion, sound 2. Chemoreceptors a. General receptors transmit information about total solute concentration of a solution b. Specific receptors respond to individual kinds of molecules i Osmoreceptors in the brain detect changes of the total solute concentration of the blood and sitmulate thirst when osmolarity
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Chapter 49 Skin Skeletal - Chapter 49 Sensory and Motor...

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