Biology 2401    A&P I             Lecture Review for Sensory Dr. Weis                     

For the Chemical Senses, know the following :

1. Taste : taste bud anatomy and location, chemoreceptor physiology, tongue papilla types, CN involved &

                        route from sensory structure along CN to the brain.  Be able to list a problem with the tongue.

2. Olfaction : olfactory epithelium histology, receptor anatomy and physiology, CN involved, route to brain,

                        adaptation, aging changes, ties with taste.

For the General (somatosensory) Senses : know the following

            a. Nociception -> neuron type, where located, spinal cord track for info carried, route to brain, discuss referred pain and phantom pain

            b. Thermoreception -> neuron type, where located, spinal cord track for info carried, route to brain

            c. Mechanoreceptors ->

                        1. Tactile -> neuron type, where located, spinal cord track for info carried, route to brain

                        2. Baroreceptors -> neuron type, where located, example

                        3. Proprioceptors -> neuron type, where located, function, spinal cord track for info carried, route to brain, problem.

For the EYE : know the following

            * accessory structures (adnexa) = name 4 and give the anatomy (gross and histo) & function for each

            *eyeball (globe) = describe the structure and function and names of all the tunics and chambers.

                                          Know the lens structure and function and problem

                                          Follow the pathway of light as it strikes the eye, listing all structures encountered.

                                          Define light and know the definition of color, wavelength, refraction, reflection,

                                                absorption and problems with light optics/refraction.

                        Photoreception (phototransduction) = anatomy and physiology of the retina, be able to

                                    compare and contrast the photoreceptors.  Define phototransduction.  Follow the

                                    visual pathway as light strikes the retina and what generally happens in the photo-

                                    receptors.  The purpose of horizontal and amacrine cells, CN involved with the eye.

For the EAR : know the following

            * regions of the ear regarding structures and function, possible problems

            * physics regarding sound : wave frequency and amplitude

            * cochlear anatomy and physiology of the receptor and the CN pathways involved with sound

            * vestibular apparatus anatomy and physiology of the receptors and the CN pathways involved with

                        balance and equilibrium.

            * Know some problems with the inner ear

            * Know the pathways to the brain from the receptor, CN involved