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1 | |
There is no difference in action potentials between those coming in from the eye and those coming in from the ear. (p. 240) |
| | A) | True |
| | B) | False |
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2 | |
Not all chemoreceptors are exteroreceptors. (p. 240) |
| | A) | True |
| | B) | False |
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3 | |
Nerve endings specialized for the sense of pain are called proprioceptors. (p. 240) |
| | A) | True |
| | B) | False |
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4 | |
Phasic receptors react only at the onset of a stimulus, and quickly stop reacting even if the stimulus continues. (p. 240) |
| | A) | True |
| | B) | False |
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5 | |
Nerve impulses from a heat receptor will be interpreted as heat whether the receptor is being stimulated by heat, cold, pressure, chemicals, or other stimuli. (p. 240) |
| | A) | True |
| | B) | False |
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6 | |
Generator (receptor) potentials are graded and reversible. (p. 242) |
| | A) | True |
| | B) | False |
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7 | |
The phasic response of a pacinian corpuscle is due to the nature of the connective tissue wrapping around the nerve fiber, not to properties of the fiber itself. (p. 242) |
| | A) | True |
| | B) | False |
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8 | |
Afferent, somatesthetic nerve fibers from proprioceptors and pressure receptors do not synapse until they reach the medulla oblongata of the brain stem. (p. 244) |
| | A) | True |
| | B) | False |
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9 | |
Since it is important to react quickly to heat, cold, or pain, the afferent nerve fibers for these receptors are large and myelinated. (p. 244) |
| | A) | True |
| | B) | False |
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10 | |
The sensory cortex (postcentral gyrus) receives afferent (sensory) nerve fibers that originate in the thalamus. (p. 244) |
| | A) | True |
| | B) | False |
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11 | |
Large areas of the postcentral gyrus are devoted to sensory information from large areas of the body (such as the chest or back), and smaller areas to information from smaller parts of the body (such as the fingers). (p. 244) |
| | A) | True |
| | B) | False |
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12 | |
Neurons have the largest receptive fields in the most sensitive areas of the skin. (p. 244) |
| | A) | True |
| | B) | False |
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13 | |
Two points of contact will be felt as one unless they fall within the receptive fields of different neurons. (p. 245) |
| | A) | True |
| | B) | False |
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14 | |
The sense of taste requires molecules dissolved in saliva to bind to the sensory neurons of the taste buds. (p. 246) |
| | A) | TRUE |
| | B) | FALSE |
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15 | |
Taste sensations are not all transmitted by the same cranial nerve. (p. 246) |
| | A) | True |
| | B) | False |
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16 | |
Most organic molecules taste salty. (p. 247) |
| | A) | TRUE |
| | B) | FALSE |
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17 | |
Although the sense of taste is not well understood, it appears that those molecules that do have a taste act by stimulating the production of cAMP as a second messenger. (p. 247) |
| | A) | True |
| | B) | False |
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18 | |
Olfactory stimuli differ from other senses that they do not go through the thalamus en route to interpretation. (p. 248) |
| | A) | True |
| | B) | False |
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19 | |
Odors cannot be classified into a small number of modalities like the four primary tissues. (p. 249) |
| | A) | True |
| | B) | False |
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20 | |
Vertical acceleration, for example in riding an elevator, is sensed mainly by the saccule. (p. 251) |
| | A) | True |
| | B) | False |
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21 | |
Neurons are not the only cells that secrete neurotransmitters. (p. 269) |
| | A) | True |
| | B) | False |
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22 | |
Calcium carbonate crystals serve to increase the inertia of otolith membranes. (p. 251) |
| | A) | True |
| | B) | False |
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23 | |
Hair cells of the semicircular canals are stimulated by otolith membranes like those of the utricle and saccule. (p. 251) |
| | A) | True |
| | B) | False |
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24 | |
The pitch of a sound is a function of its decibels. (p. 254) |
| | A) | True |
| | B) | False |
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25 | |
A sound of zero decibels cannot be heard and is considered infrasonic. (p. 254) |
| | A) | True |
| | B) | False |
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26 | |
A sound of 10 dB is 50 times as loud, and a sound of 50 dB is 500 times as loud, as the threshold of hearing which is at 0 dB. (p. 254) |
| | A) | True |
| | B) | False |
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27 | |
Sound waves are channeled by the pinna into and along the auditory tube to the eardrum. (p. 254) |
| | A) | True |
| | B) | False |
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28 | |
The tensor tympani muscle helps to amplify vibrations of the eardrum as they are transferred to the oval window. (p. 254) |
| | A) | True |
| | B) | False |
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29 | |
The stapedius muscle helps to amplify vibrations of the eardrum as they are transferred to the oval window. (p. 254) |
| | A) | True |
| | B) | False |
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30 | |
Contraction of the tensor tympani muscle protects the inner ear from sharp, loud sounds (those of a gunshot, for example). (p. 255) |
| | A) | True |
| | B) | False |
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31 | |
The scala vestibuli and scala tympani are filled with perilymph. (p. 256) |
| | A) | True |
| | B) | False |
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32 | |
Liquids cannot be compressed. If they could, the cochlea (spiral organ) would not work. (p. 256) |
| | A) | True |
| | B) | False |
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33 | |
The more the stereocilia of cochlear hair cells are bent, the louder a sound is perceived. (p. 258) |
| | A) | True |
| | B) | False |
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34 | |
The more the stereocilia of the hair cells are bent, the higher the pitch of the sound is perceived by the brain. (p. 258) |
| | A) | True |
| | B) | False |
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35 | |
Sounds of different pitch stimulate different regions of the auditory cortex. (p. 258) |
| | A) | True |
| | B) | False |
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36 | |
The sense of hearing declines with age faster in men than in women. (p. 259) |
| | A) | True |
| | B) | False |
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37 | |
Conduction deafness is due to failure of the hair cells to generate action potentials, or failure of the action potentials to be conducted to the auditory cortex. (p. 259) |
| | A) | True |
| | B) | False |
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38 | |
The human retina is not sensitive to ultraviolet light. (p. 260) |
| | A) | True |
| | B) | False |
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39 | |
Electromagnetic radiation of long wavelengths has less energy than radiation with shorter wavelengths. (p. 260) |
| | A) | True |
| | B) | False |
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40 | |
The posterior chamber of the eye is occupied by the vitreous body. (p. 263) |
| | A) | True |
| | B) | False |
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41 | |
Brown and black eye colors are due to the pigment melanin in the iris and blue eye color is due to the pigment anthocyanin in the iris. (p. 260) |
| | A) | True |
| | B) | False |
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42 | |
Zonular fibers attach the lens to the ciliary body of the eye, forming a suspensory ligament that supports the lens. (p. 261) |
| | A) | True |
| | B) | False |
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43 | |
Vision depends on the bending or refraction of light rays, which is done mainly by the lens of the eye. (p. 263) |
| | A) | True |
| | B) | False |
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44 | |
The right half of the visual field projects onto the retina of the right eye, and the left half of the visual field projects onto the retina of the left eye. (p. 263) |
| | A) | True |
| | B) | False |
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45 | |
As an object is brought closer to the eye, the curvature of the cornea must increase to keep it focused on the retina. (p. 265) |
| | A) | True |
| | B) | False |
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46 | |
The ciliary body (muscle) puts the most tension on the lens when its muscle is relaxed. (p. 266) |
| | A) | True |
| | B) | False |
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47 | |
Presbyopia appears due to thickening of the lenses of the eyes. (p. 266) |
| | A) | True |
| | B) | False |
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48 | |
Myopia is due to eyeballs that are too short for the focal length of the lens. (p. 267) |
| | A) | True |
| | B) | False |
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49 | |
The light-sensitive parts of the photoreceptor cells in the retina face away from the light entering the eye. (p. 268) |
| | A) | True |
| | B) | False |
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50 | |
Visual purple (rhodopsin) gets its name from the fact that it absorbs best in the violet to blue part of the color spectrum. (p. 268) |
| | A) | True |
| | B) | False |
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51 | |
Rod and cone photoreceptor cells cannot produce action potentials. (p. 270) |
| | A) | True |
| | B) | False |
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52 | |
Dark adaptation is due to a number of factors, not just increased amounts of rhodopsin in the rods. (p. 269) |
| | A) | True |
| | B) | False |
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53 | |
Color blindness is caused by a gene on the X chromosome, and since women have two X chromosomes, they are more likely than men to be color blind. (p. 271) |
| | A) | True |
| | B) | False |
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54 | |
A person who genetically lacks red cones is known as a monochromat and will see everything in shades of green. (p. 271) |
| | A) | True |
| | B) | False |
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55 | |
The blue, green, and red cones absorb different wavelengths of light because they have different types of retinene. (p. 271) |
| | A) | True |
| | B) | False |
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56 | |
The eyes have the greatest number of cones and the sharpest visual acuity at the optic disc. (p. 271) |
| | A) | True |
| | B) | False |
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57 | |
The least neuronal convergence and greatest visual acuity occurs at the fovea centralis region of the retina. (p. 272) |
| | A) | True |
| | B) | False |
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58 | |
The areas of the retina with the most neuronal convergence are most responsive in dim light. (p. 272) |
| | A) | True |
| | B) | False |
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59 | |
All the impulses from the left eye are transmitted to the right visual cortex, and all the impulses from the right eye are transmitted to the left visual cortex. (p. 274) |
| | A) | True |
| | B) | False |
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60 | |
The lateral geniculate nucleus has separate layers of neurons for input from the right and left eyes. (p. 273) |
| | A) | True |
| | B) | False |
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2002 McGraw-Hill Higher Education