Neurophysiology Exam with Questions and Answers

Neurophysiology Exam with Questions and Answers Which of the following statements is correct concerning the elements of the retina? a. Pigment layer of the retina contains the photoreceptors. b. Photoreceptor's activation (rods and cones) results in depolarization of the receptor. c. Central fovea contains color carrying receptor. d. Total number of cones in the retina is much greater than the total number of rods. e. Each individual cone responds to all wave lengths of light. ANSWER Central fovea contains color carrying receptor. Which of the following muscles is contracted as part of the pupillary light reflex? a. Ciliary muscle. b. Radial fibers of the iris c. Pupillary dilator muscle. d. Superior oblique muscle e. Pupillary sphincter muscle ANSWER Pupillary sphincter muscle Which of the following provides about one-third of the 59 diopters of the refractive power of the eye? a. Pupil b. Anterior surface of the cornea c. Posterior surface of the cornea d. Internal Lens ANSWER Internal lens