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Neuro Exam 2

Sensory Systems

What is the sensory system? the special senses associated with vision, hearing, smell, taste, and touch. The sensory system receives stimuli and sends the impulses to the brain to be interpreted.
What are the senses animals have? (8) temp, pain, itch, balance, proprioception, blood pressure, hunger, and thirst
What is Exteroception? One’s sense of the external world. Stimuli comes from outside the body
What is Introception? One’s sense of the internal state of the body. Stimuli come from inside the body.
What is Sensory Transduction? The process through which a receptor cell converts the energy in a stimulus into an electrical signal
What are the 4 forms of stimulus energy? Electromagnetic (light), Chemical (tastants/odorants), Mechanical (sound, touch, vibration), and Thermal (temp)
Purpose of sense organs? Contain sensory receptor cells that transduce sensory signals along with non neural tissues
What are Chemoreceptors activated by? Activated by binding of chemicals (taste, smell, pain)
What are Photoreceptors activated by? Activated by photons of light (vision)
What are Thermoreceptors activated by? Activated by changes in temp (temp, pain)
What is sensory transduction? the process through which a receptor cell converts the energy in a stimulus into an electrical signal
What does the activation of sensory receptor molecules on receptor cells generate? a receptor potential: a local change in the membrane potential of a receptor cell.
What are taste receptor cells activated by? In the taste system, taste receptor cells express taste receptors that are activated by tastants
What rods and cons express opsin activated by? In the visual system, rods and cones express opsins that are activated by exposure to photons of light
Created by: neuropoodle
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