BIOL 40Blab manual_senses eye

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PRE-LAB EXERCISE A. Overview of the Eye Go to the Views menu, select Microanatomy, and choose 1. Eye. You are responsible for the identification of all bold terms and answers. Medial rectus muscle... Nasolacrimal duct Superior oblique muscle Superior rectus muscle Lateral rectus muscle Cornea Iris Inferior oblique muscle Inferior rectus muscle Lacrimal gland Sclera3 3. Locate the lacrimal gland. Note that the lacrimal gland, which creates tears, is located opposite to the nasolacrimal duct. a. What is the function of each of the above structures and how does their positioning aid that function? b. What are tears made of? Why is the composition of tears important to the eye? 4. Locate the cornea. Notice that it is transparent, which allows light to pass easily through it. However, the cornea’s transparency comes at a cost: the cornea cannot have blood vessels in it, which makes it harder for it to heal when it is torn. 5. Hide the cornea and locate the iris. Select the book icon for more information. a. What substance in the iris determines eye color? b. The iris separates the eye into a(n) ________________________________ and a(n) ________________________________. [Show More]

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