Question

A) Otoliths

B) Vestibule
C) Pharyngotympanic tube
D) Tympanic membrane

27) Ear stones.

28) Connects the middle ear with the nasopharynx.

29) Separates external acoustic meatus from the middle ear.

30) Contains utricle and saccule.

31) Detects linear acceleration.

Answer 1

The structures described are parts of the ear: otoliths, vestibule, tympanic membrane, and pharyngotympanic tube. They are involved in detecting linear acceleration and connecting the middle ear with the nasopharynx.

Step-by-step explanation:

The structures described in the question pertain to the ear. The correct options are:

1. 27) Otoliths (ear stones)
2. 28) Vestibule
3. 29) Tympanic membrane (eardrum)
4. 30) Pharyngotympanic tube (also known as Eustachian tube)
5. 31) Otoliths (ear stones)

The otoliths, or ear stones, are small calcium carbonate crystals located in the inner ear that help detect linear acceleration. The vestibule is a structure in the inner ear that contains the utricle and saccule, which are responsible for detecting changes in linear acceleration and head position. The tympanic membrane, or eardrum, separates the external acoustic meatus (ear canal) from the middle ear. The pharyngotympanic tube, also known as the Eustachian tube, connects the middle ear with the nasopharynx.