Question: Briefly Describe And Identify The External And Internal Components Of The Eye Found In Your Textbook Using Figures 23.1 And 23.3, Respectively.

Note G The adult human eye is a sphere measuring about 2 5 cm (1 inch) in diameter. Only about one-sixth of the eye’s anterior surface is observable (Figure 23.1. p. 362), the remainder is enclosed and protected by a cushion of fat and the walls of the bony orbit The accessory structures of the eye include the eyebrows, eyelids, conjunctivae, lacrimal apparatus, and extrinsic eye muscles (Table 23.10.p. 362, and Figure 23.2.p. 363), Lacrimal sac Medial commissure -Orbicularis oculi muscle -Eyebrow -Tarsal plate Palpebral conjunctiva -Tarsal glands Cornea Lacrimal caruncle Upper eyelid Lacrimal gland Excretory ducts of lacrimal glands Lateral commissure Palpebral fissure Lower eyelid Lacrimal punctum Lacrimal canaliculus Nasolacrimal duct Lyelashes Interior meatus of nasal cavity -Bulbar conjunctiva Conjunctival sac Nostril