PHYL 2041 Lecture Notes - Lecture 2: Lamellar Corpuscle, Sense Of Balance, Afferent Nerve Fiber
18 Oct 2018
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Document Summary
[nervous system]: a communications and control network that allows an organism to interact with its environment: cns (central nervous system) brain and spinal cord, pns (peripheral nervous system) afferent/sensory division and the efferent/motor division. Sensory detection, processing of information, and the expression of behaviour. Central nervous system sends a signal to control the pns (glands, and muscles) to carry out the proper response. Sensory system information that is detected by the sensory neurons; there are 3 groups of neurons based on their functions (motor, interneuron, and sensory). The sensory neurons are afferent, and they are bipolar. They account for 0. 9% of all neurons, and they are involved in sight, hearing, taste, touch, and temperature. Traditional human senses = touch, taste, smell, sight, and hearing. Non-traditional senses = nociception, equilibrioception, proprioception, and thermoception. Some specialized structures that are activated by stimuli and converts a stimulus into a neuronal activity.
