Chapter 33

The pain of heartburn is an example of a ______. a. somatic sensation b. visceral sensation c. sensory adaptation d. spinal reflex

_______ is defined as a decrease in the response to an pngoing stimulus. a. Perception b. Visual accommodation c. Sensory adaptation d. Somatic sensation

Which is a somatic sensation? a. taste b. smell c. touch d. hearing e. a through f. all of the above

Chemoreceptors play a role in the sense of ______. a. taste b. smell c. touch d. hearing e. both a and b f. all of the above

In the ______ , neurons are arranged like maps that correspond to different parts of the body surface. a. retina b. somatosensory cortex c. basilar membrane d. occipital lobe

Mechanoreceptors in the ______ send signals to the brain about the body's position relative to gravity a. eye b. ear c. tongue d. nose

The middle ear functions in ______. a. detecting shifts in body position b. transmitting sound waves c. sorting sound waves out by frequency d. all of the above

Substance \(\mathrm{P}\) ______. a. increases pain-related signals b. is a natural painkiller c. is the active ingredient in aspirin

The organ of Corti contains receptors that signal in response to______. a. heat b. sound c. light d. pheromones

Night vision begins with stimulation of ______. a. hair cells b. rod cells c. cone cells d. neuroglia

Visual accommodation involves adjustment to the shape or position of the _______. a. conjunctiva b. retina c. orbit d. lens

When you view a close object your lens gets _______. a. flatter b. rounder c. darker d. cloudier

Defective or missing ______ cause color blindness. a. hair cells b. rod cells c. cone cells d. neuroglia

______ causes the pupil to widen. a. Low light b. Bright light

Match each structure with its description. ______ cataract ______ cochlea _____ eardrum _____ lens _____ sclera ______ fovea _____ taste bud _____ Pacinian corpuscle ______ pinna _____ vestibular apparatus _____ vomeronasal organ a. protects eyeball b. transmits vibration to bone c. functions in balance d. detects pheromones e. interferes with vision f. contains chemoreceptors g. focuses rays of light h. has the most cones i. collects sound waves j. sorts out sound waves k. detects touch