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Life, 4/e

Ricki Lewis, University of New York at Albany
Mariëlle Hoefnagels, University of Oklahoma
Douglas Gaffin, University of Oklahoma
Bruce Parker, Utah Valley State College

The Senses

Chapter Quiz


1	What function does a sensory receptor have when dealing with a stimulus?
		A)	detect stimulus
		B)	transduce stimulus
		C)	amplify stimulus
		D)	All of these are correct.


2	What is true about receptor potential in sensory receptors?
		A)	triggered by a distribution of ions
		B)	not “all-or-none”
		C)	precedes action potential
		D)	All of these are correct.


3	When sensory input becomes less noticeable as an organism becomes accustomed to a stimulus, ___________ occurs.
		A)	sensory overload
		B)	sensory adaptation
		C)	sensory transduction
		D)	None of these is correct.


4	Which of the following senses does not use chemoreceptors to detect stimuli?
		A)	smell
		B)	taste
		C)	touch
		D)	None of these is correct.


5	Chemoreception is used by invertebrates to detect _____________.
		A)	concentration of chemicals in the environment
		B)	danger
		C)	potential meals
		D)	All of these are correct.


6	True or false. Only vertebrates use rhodopsin as a photoreceptive pigment.
		A)	True
		B)	False


7	Ommatidia are photosensitive structures found in _____________.
		A)	cephalopods
		B)	arthropods
		C)	flatworms
		D)	vertebrates


8	Some animals use ___________ to sense balance and equilibrium.
		A)	setae
		B)	statocysts
		C)	tympanic membranes
		D)	ocelli


9	Where are odors interpreted and identified in humans?
		A)	thalamus
		B)	olfactory bulb
		C)	cerebral cortex
		D)	olfactory epithelium


10	Why is the sense of smell often associated with emotions?
		A)	olfactory and pain receptors are similar
		B)	odors, as chemicals, alter brain chemistry
		C)	olfactory input also travels to the limbic system
		D)	All of these are correct.


11	True or false. The only tastes that humans can detect are sweet, sour, bitter, and salty.
		A)	True
		B)	False


12	True or false. Taste receptors are never replaced.
		A)	True
		B)	False


13	Photoreceptors are located in the __________ of the eye.
		A)	sclera
		B)	retina
		C)	cornea
		D)	pupil


14	Which of the following is not a part of the retina?
		A)	rods
		B)	cones
		C)	fovea centralis
		D)	None of these is correct.


15	What structure is not useful in focusing light on the retina?
		A)	cornea
		B)	lens
		C)	vitreous humor
		D)	ciliary muscle


16	True or false. Vision is generally a simple linear pathway of light from the retina to the brain.
		A)	True
		B)	False


17	What causes colorblindness?
		A)	missing cones
		B)	missing rods
		C)	defective cones
		D)	defective rods


18	Which of the following is not part of the middle ear?
		A)	malleus
		B)	stapes
		C)	incus
		D)	None of the above.


19	In the inner ear, hair cells or mechanoreceptors lie between what structures?
		A)	basilar and auditory membranes
		B)	auditory and tectorial membranes
		C)	basilar and tectorial membranes
		D)	None of these is correct.


20	Which of these is not associated with the sense of motion housed in the semicircular canals?
		A)	ampulla
		B)	fluid
		C)	ciliated hair cells
		D)	otoliths


21	Referred pain occurs because _____________________.
		A)	pain receptors are located nearly everywhere in the body
		B)	there are several types of pain receptors and messages get crossed
		C)	pain receptors share pathways to the brain
		D)	pain receptors adapt quickly

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