BIOL 186 Chapter Notes - Chapter Chapter 48 & 50: Afferent Nerve Fiber, Body Fluid, Olfactory Bulb

• School: University of Victoria
• Department: Biology
• Course: BIOL 186
• Professor: Gregory Beaulieu

Document Summary

Se(cid:374)sory pro(cid:272)essi(cid:374)g sti(cid:373)ulus re(cid:272)eptio(cid:374) se(cid:374)sory tra(cid:374)sdu(cid:272)tio(cid:374) se(cid:374)sory per(cid:272)eptio(cid:374) sensory adaptation. Remember that integration is always last and the amplification must follow transduction. Senses come from stimulus and represents a form of energy. Sensory receptor converts stimulus into enery to change membrane potential. Efferent leaving the cns by motor neuron and into effector cell. Transduction: stimulus sensory receptor change in receptor membrane permeability receptor potential (graded change in membrane potential) Stimulu alter the activity of excitable sensory cells via the transduction of the signal. Transmission: if the receptor = the sensory neurons fire to cns, if the receptor does not = the sensory neuron ge(cid:374)erates ap (cid:271)ut does(cid:374)"t get sent to cns. Chemoreceptors chemical solute or molecular detection. Mechanorecepts pressure, touch, stretch, motion and sound. Musce spindles: a group of dendrite- encircled muscle fibres. Muscle spindles are stretch receptors within the body of a musclethat primarily detect changes in the length of the muscle.