363 Final Exam| 808 questions| with complete solutions

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