Senses powerpoint

Multiple Choice

What percentage of all sensory receptors are located in the eyes?

• 70 percent

• 50 percent

• 30 percent

• 90 percent

Multiple Select

Which of the following are accessory structures of the eye?

• Eyelids

• Meibomian glands

• Ciliary glands

• Cornea

Multiple Choice

What is the primary function of the extrinsic eye muscles?

• Produce eye movements

• Protect the eye

• Lubricate the eye

• Transmit nerve signals

Multiple Choice

Which layer of the eye wall is the outermost?

• Fibrous tunic

• Choroid

• Sensory tunic

• Retina

Multiple Choice

Which part of the eye is responsible for allowing light to pass through and can be transplanted without fear of rejection?

• Cornea

• Sclera

• Iris

• Lens

Multiple Select

Which of the following are functions of the choroid layer of the eye?

• Provides nutrients to the eye

• Prevents light from scattering

• Contains photoreceptors

• Gives eye color

Multiple Choice

What is the main function of rods in the retina?

• Allow for detailed color vision

• Allow dim light vision and peripheral vision

• Give eye color

• Transmit signals to the optic nerve

Multiple Choice

Which of the following is NOT a function of the aqueous humor?

• Helps maintain intraocular pressure

• Provides nutrients for the lens and cornea

• Keeps the eye from collapsing

• Is reabsorbed into venous blood through the canal of Schlemm

Multiple Choice

Arrange the following structures in the correct order for the visual pathway: optic nerve, thalamus, photoreceptors of the retina, visual cortex of the occipital lobe, optic tracts.

• Photoreceptors of the retina → Optic nerve → Optic tracts → Thalamus → Visual cortex of the occipital lobe

• Optic nerve → Photoreceptors of the retina → Optic tracts → Thalamus → Visual cortex of the occipital lobe

• Photoreceptors of the retina → Optic tracts → Optic nerve → Thalamus → Visual cortex of the occipital lobe

• Optic tracts → Photoreceptors of the retina → Optic nerve → Thalamus → Visual cortex of the occipital lobe

Multiple Select

Which of the following are controlled by the autonomic nervous system in the eye?

• Constriction of pupils in bright light

• Accommodation for close objects

• Eye movement to follow objects

• Convergence of eyes when viewing close objects

Multiple Choice

Which of the following is NOT a structure of the external ear?

• Pinna (auricle)

• External auditory canal

• Cochlea

• Tympanic membrane

Multiple Choice

What is the function of ceruminous (wax) glands in the external auditory canal?

• To produce earwax that protects and lubricates the ear canal

• To transmit sound vibrations to the inner ear

• To equalize pressure in the ear

• To move the malleus bone

Multiple Choice

Which bones are found in the tympanic cavity and what is their function?

• Malleus, Incus, Stapes; transfer sound to the inner ear

• Cochlea, Vestibule, Semicircular canals; maintain balance

• Pinna, Auditory canal, Tympanic membrane; collect sound

• Ceruminous glands, Hair cells, Tectorial membrane; produce earwax

Multiple Select

Select all that are true about the Organ of Corti.

• It is located within the cochlea.

• Its receptors are hair cells on the basilar membrane.

• It produces cerumen (earwax).

• It transmits nerve impulses to the auditory cortex on the temporal lobe.

Multiple Choice

Which of the following is NOT considered a special sense?

• Smell

• Taste

• Pain

• Hearing