BIOL 235- Chapter 17 Special Senses (with complete solutions)

Olfaction correct answers The sense of smell. Olfactory Receptor Cell correct answers Transduces odors into neural signals. Bipolar neuron with its cell body lying between supporting cells located in the mucous membrane lining the superior portion of each nasal cavity. Olfactory Epithelium correct answers Occupies the superior part of the nasal cavity covering the inferior surface of the cribform plate and extends along the superior nasal concha. Olfactory Cilia correct answers Is the site for olfactory transduction Odorants correct answers Chemicals that have an odor that bind to and stimulate the olfactory receptors in the olfactory cilia. Supporting Cells correct answers Provide physical support, nourishment and electrical insulation for the olfactory receptor cells. Columnar epithelial cells of the mucous membrane lining the nose. Basal Cells correct answers Continually undergo cell division to produce new olfactory receptor cells. Stem cells located between the base of supporting cells. Olfactory Glands correct answers Bowmans Glands Produce mucus that moistens the surface of the olfactory epithelium and dissolve oderants so transduction can occur. How does a smell occur correct answers Olfactory receptor cells react with odorant generate action potential (depolarization) develops triggers nerve impulse Olfactory transduction Physiology of olfaction correct answers odorant binds to receptor protein (g protein) activates enzyme Adenylate Cyclase to produce adenosine monophosphate (Camp) opens NA+ channel