Practice Questions: Chapter 2

Answered: Correct: Score:%

1. Surface ectoderm give rise to:

A. pinnae
B. ossicles
C. Eustachian tube
D. lining of the middle ear cavity
E. middle ear muscles

2. Maldevelopment of the first and second branchial arches may result in:

A. vertigo
B. conductive hearing loss
C. tinnitus
D. labrynthitis
E. sensorineural hearing loss

3. The tympanic membrane is derived from:

A. surface ectoderm
B. endoderm
C. mesoderm
D. mesoderm and endoderm
E. all three germ layers

4. The membranous labyrinth:

A. is an air-filled space in the inner ear
B. is a space in the inner ear containing perilymph
C. is a space in the inner ear containing endolymph
D. is a space in the inner ear confined to the cochlea
E. is a space in the inner ear confined to the utricle, saccule, and semicircular canals.

5. Perilymph:

A. is a fluid confined to the membranous labyrinth
B. is found in the scalae vestibuli and tympani
C. is similar in chemical composition to intracellular fluid
D. is produced by the stria vascularis
E. leaves the inner ear via the ductus reuniens