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