During the dark cycle, Na+ gated channels are open and retin…

During the dark cycle, Na+ gated channels are open and retinal is in the 11-cis form. When a light photon hits a photoreceptor this all changes. Describe opsin activation using the terms PDE, cGMP, Na+ channels, transducin, neurotransmitters, and 11-trans retinal. +3 points if you a) define bleaching, b) define regeneration, and c) explain why form is important to function in this process. [+1 point if answer correctly any of these 3 parts).

Let’s be real. Sound conduction is pretty freaking cool. The…

Let’s be real. Sound conduction is pretty freaking cool. The following is a list of the steps that occur in the production of an auditory sensation with some missing key terms. Put the steps in order and fill in the missing terms for full credit. The pressure wave distorts the basilar membrane on its way to the ______ window. Movement of the tympanic membrane causes displacement of the ________. Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve. Movement of the _______ causes movement of the incus and _______. Distortion of the basilar membrane forces the hair cells of the ______ organ to vibrate against the _______ membrane. Movement of the _____ window establishes pressure waves in the perilymph of the scala _______.