295 Assessment LESSON 7.1 The Eye Learning Key Terms and Concepts 1. The _____ is a membrane that lines the eyelid. 2. The muscles responsible for moving the eye within its socket are the _____ muscles. 3. The white of the eye and the cornea make up the _____ of the eye. 4. The eyeball has three layers: the sclera, the choroid, and the _____. 5. The junction between the optic nerve and the eye is the location of the _____, or physiological blind spot on the retina. 6. True or false? The muscles of the ciliary body must contract to focus on items more than 20 feet away. 7. Maria wears contact lenses to see the whiteboard at her high school. She probably has an eye disorder called _____. 8. In the eye condition known as _____, malfunctioning extrinsic muscles cause the eyes to drift in different directions. 9. Overproduction of aqueous humor within the eye can result in a condition of high pressure known as _____. Thinking Critically 10. Compare the anatomy and functions of the iris and the pupil. 11. What would happen if a person’s lacrimal glands were clogged? 12. What would be the result of the vitreous humor leaking out of the eyeball? LESSON 7.2 The Ear Learning Key Terms and Concepts 13. Another name for the pinna is _____. 14. Cerumen is produced by glands in the _____ canal of the ear. 15. Another name for the eardrum is the _____. 16. In the pathway of hearing, sound waves travel from the tympanic membrane through the _____ to the oval window. 17. The purpose of the _____ is to equalize pressure in the middle ear. 18. The organ of Corti is located in the _____ duct of the ear. 19. The _____ in the ear carries sound impulses to the brain. 20. Damage to the hair cells in the organ of Corti that causes them to move randomly can result in a condition called _____. 21. Chronic inflammation of the semicircular canals of the inner ear causes periodic but severe vertigo, as well as progressive hearing loss this condition is classified as _____. Instructions: Identify the letter in Figure 7.27 that corresponds to the name of each part of the ear. Figure 7.27 © Body Scientific International H B C E G D A F 22. Auditory canal _____ 23. Middle ear _____ 24. Semicircular canals _____ 25. Auricle _____ 26. Vestibulocochlear nerve _____ 27. Tympanic membrane _____ 28. Cochlea _____ 29. Eustachian tube _____ Copyright Goodheart-Willcox Co., Inc.