Lesson 7.2 Crossword
Across
1. | a membrane-covered opening that connects the middle ear to the inner ear |
4. | tiny bone in the middle ear that attaches to the anvil on one side and the oval window on the other |
7. | winding tunnels located in the inner ear |
9. | inner ear channels containing receptor hair cells that play an important role in balance |
11. | a spiral-shaped ridge of epithelium in the cochlear duct lined with hair cells that serve as hearing receptors |
13. | a channel that connects the middle ear to the pharynx and serves to equalize pressure on either side of the tympanic membrane |
14. | a thick fluid inside the membranous labyrinth |
15. | a sheet of tissue at the end of the auditory canal; also known as the eardrum |
16. | tiny bone within the middle ear that transmits sound from the hammer to the stirrup |
Down
2. | a short, tubelike structure that connects the outer ear to the eardrum |
3. | a chamber in the inner ear that contains the three semicircular canals |
5. | a clear fluid that fills the bony labyrinth |
6. | the body's three smallest bones—the hammer, anvil, and stirrup; found in the middle ear |
8. | the irregularly shaped outer portion of the ear |
10. | a snail-shaped structure in the inner ear that enables one to hear |
12. | tiny bone in the middle ear that transmits sound from the tympanic membrane (eardrum) to the anvil |