Head and Neck: Teeth, Mouth, Ears, Eyes

Head and Neck: Teeth, Mouth, Ears, Eyes

# Tongue

• Correct description of the tongue: The glossopharyngeal nerve provides sensation for the posterior 1/3 of the tongue.

# Parotid Duct

• Correct description of the parotid duct: It is approximately 7 cm long.

# Oral Cavity Proper

• Incorrect description of the oral cavity proper: Its floor is made up of: The entire dorsal surface of the tongue and the mucous membrane that folds from the tongue onto the inner surface of the mandible.

# Tympanic Cavity

• Correct description of the tympanic cavity: It is located behind the auditory tube and in front of the mastoid antrum.

# Bony Labyrinth

• Incorrect description of the bony labyrinth: The oval niche and round niche are located on the posterior wall of the vestibule.

# Nerve

• Incorrect description of the nerve: The lens epithelium is located on the posterior surface of the lens body.

# Middle Nasal Meatus

• Incorrect description of the middle nasal meatus: This is the opening for the nasolacrimal duct.

# Intrinsic Muscles of the Larynx

• Correct description of the intrinsic muscles of the larynx: The cricothyroid muscle tenses the vocal cords and narrows the glottis.