sensory organs for hearing and maintaining equilibrium Correct Answer: ears
Ears three parts: Correct Answer: external, middle, inner
called the auricle or pinna Correct Answer: external ear
Characteristic shape serve
...
sensory organs for hearing and maintaining equilibrium Correct Answer: ears
Ears three parts: Correct Answer: external, middle, inner
called the auricle or pinna Correct Answer: external ear
Characteristic shape serves to funnel sound waves into its opening, which is called the external
auditory canal Correct Answer: external ear
external ear consists of movable ___ and ____ Correct Answer: cartilage, skin
A cul-de-sac 2.5 to 3 cm long in adults that terminates at eardrum, or tympanic membrane
Correct Answer: auditory canal
a yellow waxy material that lubricates and protects ear; Forms sticky barrier to keep foreign
bodies from entering and reaching sensitive tympanic membrane Correct Answer: cerumen
___Lined with glands that secrete cerumen Correct Answer: auditory canal
separates the external and middle ear Correct Answer: tympanic membrane (eardrum)
External Ear:
-Translucent membrane with a ____ color
-Oval and slightly concave, pulled in at its center by one of middle ear ossicles, the _____
-Parts of malleus show through translucent drum Correct Answer: pearly gray
malleus
Tiny air-filled cavity inside temporal bone Correct Answer: Middle Ear
Middle ear contains tiny ear bones, ossicles: _____, ______, _____ Correct Answer: malleus,
incus, and stapes
Middle Ear:
-Opening to the outer ear is covered by the ____
-Openings to inner ear are _____ at the end of the stapes and the round window
-_______: opening that connects middle ear with nasopharynx and allows passage of air
-Normally closed, but opens with swallowing or yawning Correct Answer: TM
oval window
Eustachian tube
Middle Ear has three functions:
1. Conducts _____ from outer ear to central hearing apparatus in inner ear
2. Protects inner ear by _______ of loud sounds
[Show More]