Ch. 4

What is the function of the lacrimal caruncle?

• It produces tears to lubricate the eye.

• It produces an oily secretion to help lubricate the eye.

• It secretes mucus to protect the eye.

• It contains antibacterial enzymes.

What is the role of the lacrimal canaliculus?

• It secretes tears.

• It connects the lacrimal gland to the nasal cavity.

• It allows tears to enter the lacrimal punctum.

• It produces mucus.

How many extrinsic eye muscles are there?

• Four

• Five

• Six

• Seven

What is the blind spot in the eye?

• The area with the most photoreceptors

• The area where the optic disc is located

• The area with the highest concentration of cones

• The area where the lens focuses light

Which cells in the eye are responsible for receiving input from cones and rods?

• Ganglion cells

• Bipolar cells

• Amacrine cells

• Horizontal cells

What is the role of the pharyngotympanic tube?

• It connects the tympanic cavity to the nasal pharynx.

• It connects the tympanic cavity to the outer ear.

• It connects the tympanic cavity to the inner ear.

• It connects the tympanic cavity to the brain.

What happens when the tympanic membrane vibrates?

• It causes the malleus to vibrate.

• It causes the cochlea to vibrate.

• It causes the stapes to vibrate.

• It causes the incus to vibrate.

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What is the function of the otolithic membrane?

• To amplify sound waves

• To detect acceleration

• To give mass to the gelatinous material

• To transport sound to the brain

What is the purpose of the vestibular nerve?

• Transmitting sound information

• Transmitting light information

• Transmitting balance information

• Transmitting taste information

#1?

(a)  

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