Ch. 12 Sensory Mechanisms

In what order do the structures of the ear come into play when hearing? a. Malleus-tympanic membrane-cochlea-stapes-cochlear nerve b. Auditory tube-malleus-cochlea-incus-cochlear nerve c. Auditory canal-tympanic membrane-malleus-cochlea-cochlear nerve d. Auditory canal-cochlea-tympanic membrane-cochlear nerve-malleus

Auditory canal-tympanic membrane-malleus-cochlea-cochlear nerve

Which of the following is/are involved in focusing light? a. lens b. pupil c. cornea d. both (a) and (c)

Both (a) lens and (c) cornea

Which of the following can be corrected with corrective lenses? a. myopia b. color blindness c. hyperopia d. both (a) and (c)

Both (a) myopia and (c) hyperopia

A more powerful stimulus will: a. result in action potentials that travel more quickly b. result in activation of more receptors c. result in more frequent action potentials d. both (b) and (c)

Both (b) result in activation of more receptors and (c) result in more frequent action potentials

Which of the following are NOT found among the somatosensory receptors? a. Mechanoreceptors b. Thermoreceptors c. Chemoreceptors d. Pain receptors

Chemoreceptors

Which of the following correctly describes the distribution of rods and cones in the retina?

Cones are more highly concentrated in the fovea centralis.

Which of the following correctly traces the path of light through the eye? a. Cornea-aqueous humor-pupil-lens-vitreous-humor-retina b. Aqueous humor-pupil-cornea-lens-vitreous-humor-retina c. Pupil-cornea-vitreous humor-lens-aqueous humor-retina d. Cornea-vitreous humor-lens-pupil-aqueous humor-retina

Cornea-aqueous humor-pupil-lens-vitreous-humor-retina

Which of the following statements explains why vision is less sharp in dim light than in bright light?

Many rods converge on a single ganglion.

Which of the following would most readily be treated with antibiotics? a. cataracts b. otitis media c. glaucoma d. Meniere's syndrome

Otitis media

Receptor adaptation results when: a. sensory neurons stop sending action potentials b. a stimulus is discontinued c. action potentials from different neurons cancel one another out d. the action potentials do not reach the brain

Sensory neurons stop sending action potentials

Different pitched sounds will result in stimulation of receptors located in different regions of: a. hair cells b. round and oval windows c. the vestibular apparatus d. the cochlea

The cochlea

Which of the following will regulate the amount of light entering the eye? a. the cornea b. the lens c. the iris d. the retina

The iris

When we adjust our head and eye position to carefully look at something we are directing the image to focus on: a. the optic disk b. the macula c. the periphery of the retina d. the optic nerve

The macula

Conduction deafness would most likely be caused by damaged to a. the cochlear nerve b. the malleus, incus, and/or stapes c. the hair cells in the cochlea d. the vestibular apparatus

The malleus, incus, and/or stapes

What do the receptors in the skin for light touch and the receptors in the nose for smell have in common? a. They both respond to pressure b. They both respond to chemicals c. They send action potentials to the same area of the brain d. They both adapt very quickly

They both adapt very quickly.