Figure 36.5 Which of the following statements about mechanoreceptors is false?
- Pacini corpuscles are found in both glabrous and hairy skin.
- Merkel’s disks are abundant on the fingertips and lips.
- Ruffini endings are encapsulated mechanoreceptors.
- Meissner’s corpuscles extend into the lower dermis.
Figure 36.14 Cochlear implants can restore hearing in people who have a nonfunctional cochlea. The implant consists of a microphone that picks up sound. A speech processor selects sounds in the range of human speech, and a transmitter converts these sounds to electrical impulses, which are then sent to the auditory nerve. Which of the following types of hearing loss would not be restored by a cochlear implant?
- Hearing loss resulting from absence or loss of hair cells in the organ of Corti.
- Hearing loss resulting from an abnormal auditory nerve.
- Hearing loss resulting from fracture of the cochlea.
- Hearing loss resulting from damage to bones of the middle ear.
Figure 36.18 Which of the following statements about the human eye is false?
- Rods detect color, while cones detect only shades of gray.
- When light enters the retina, it passes the ganglion cells and bipolar cells before reaching photoreceptors at the rear of the eye.
- The iris adjusts the amount of light coming into the eye.
- The cornea is a protective layer on the front of the eye.