BIOL373 Study Guide - Midterm Guide: Lamellar Corpuscle, Postcentral Gyrus, Dorsal Root Ganglion
9 Feb 2016
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Lung inflation ph of csf ph and oxygen content of blood. Stimulus (some form of physical energy) acts on a . Receptor transduces stimulus into intracellular signal (typically change in membrane potential) Information reaches subcortical integrating/relay centers (e. g. thalamus, medulla ) Cutaneous receptor for pain, crude touch and temperature. Receptors with nerve endings enclosed in layers of connective tissue. Receptors for special senses, usually cells that release neurotransmitter onto sensory neuron. Hair cell in inner ear: mechanoreceptor. Receptors can be grouped according to type of stimulus. Mechanoreceptors: sensing chemicals, oxygen, ph, various organic molecules such as glucose, smell, taste, pressure (baroreceptors), cell stretch (osmoreceptors), vibration, acceleration, sound, hearing equilibrium, photons of light. Each sensory receptor has an adequate stimulus: type of energy to which it responds best, thermoreceptors. Respond best to increase in temperature (vs. pressure) Deformation of membrane that open ion channels: mechanoreceptors, photoreceptors of eye.
