Question

question 26
1 pts
the nerve carrying taste information from the anterior two - thirds of the tongue is the
olfactory.
hypoglossal.
facial.
glossopharyngeal.

question 27
1 pts
endolymph - filled structure containing receptors for hearing.
saccule
vestibule
semicircular canals
cochlear duct
utricle

question 28
1 pts
receptors for hearing are located in the
semicircular canals.
cochlear duct.
tympanic membrane.
middle ear.

Explanation:

• Question 26: The facial nerve (cranial nerve VII) carries taste information from the anterior two - thirds of the tongue. The olfactory nerve is for the sense of smell. The hypoglossal nerve is mainly for tongue movement. The glossopharyngeal nerve carries taste information from the posterior one - third of the tongue.
• Question 27: The cochlear duct (also known as the scala media) is filled with endolymph and contains the organ of Corti, which has the receptors for hearing. The saccule and utricle are involved in the sense of linear acceleration and static equilibrium. The vestibule is part of the bony labyrinth related to balance. The semicircular canals are involved in the sense of rotational acceleration.
• Question 28: The organ of Corti, which has the receptors for hearing, is located in the cochlear duct. The semicircular canals are for balance. The tympanic membrane is for sound transmission (it vibrates in response to sound waves but is not a receptor site). The middle ear is involved in sound conduction (e.g., via the ossicles) but not in housing the hearing receptors.

Answer:

• Question 26: facial
• Question 27: cochlear duct
• Question 28: cochlear duct