ANP 1106 Midterm: Revision7.3 (Vision) [Special Senses]

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Joanne Savory

Document Summary

70% of all sensory receptors are in the eye. Accessory structures: include eyebrows, eyelids, conjunciva, lacrimal apparatus, extrinsic eye muscles. Tarsal plates of ct supports the eyelids internally. Levator palpebrae superioris: gives the upper eyelid mobility. Covers the whites of the eyes as the ocular conjunciva. A slightly irregular hollow sphere with anterior and. Fibrous, vascular, sensory layer are the three tunics. Lens separates the internal cavity into anterior and posterior segments. Consists of the lacrimal gland & associated ducts secrete tears (innervated by cn vii) Enter the eye via superolateral excretory ducts. Exit the eye medially via the lacrimal punctum. Electromagneic radiaion energy waves from hort gamma rays to long radio waves. Our eyes respond to a small porion of this spectrum called the visible spectrum. Diferent cone receptor cells in the reina respond to diferent wavelengths of the visible spectrum. Pathway of light: cornea aqueous humor lens vitreous humor neural layer of reina to the photoreceptors.