UNC-Chapel Hill BIOL 252 - Conclusion of Senses (6 pages)

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Conclusion of Senses

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Conclusion of Senses


Equilibrium and Vision

Lecture number:
Lecture Note
University of North Carolina at Chapel Hill
Biol 252 - Fundamentals of Human Anatomy and Physiology

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BIOL 252 1st Edition Lecture 7 Outline of Last Lecture I Gustation II Olfaction III Hearing and Equilibrium IV Poll Everywhere V Sensory Coding VI Cochlear Tuning VII Projection Pathway VIII Equilibrium Outline of Current Lecture I Equilibrium II Vision III Sensory Transduction in the Retina IV Generating Optic Nerve Signal V How do we have different sensitivities VI Color vision VII Visual Projection Pathway Current Lecture I Equilibrium a Static equilibrium i Saccule and utricle ii When head is tilted heavy otolithic membrane sags bending the stereocilia iii b Semicircular Ducts These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute II Sensory organ Gelatinous membrane Cochlear ducts Organ of corti Tectorial membrane Utricle Saccule Macula Otolithic membrane Semicircular ducts Crista Cupula c Angular acceleration i Crista Ampullaris ii When head is turning cupula is pushed into endolymph iii Cupula hangs into endolymph as it turns is pushed into endolymph which is stationary iv Tells us which way we re moving in space d Vestibular Projection Pathway i Awareness of spatial orientation and movement vestibular cortex ii Cerebellum controls muscle movements according to how head moving in space Vision a Perception of objects in the environment by means of the light that they emit or reflect b Conjunctiva i Membrane that covers eyeball ii Starts at margins of eyelids iii Only other visible structure cornea c Lacrimal Apparatus i Lacrimal gland tears are produced source ii Sink medial lacrimal punctum iii Flows lateral to medial then to nasal cavity to help wash away foreign particles and prevent infection w lysozyme d Extrinsic Eyes Muscles i Extrinsic outside of ii Ciliary body and iris are examples of intrinsic iii Four of them rectus muscles straight located at 12 3 6 9 o clock iv 2 oblique muscles turning movements of eyeball e Fluids of the eye i Aqueous humor

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