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Test key for chapter 13 test sensonsry system the human body in health and illness 6 edition herhily...

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Chapter 13: Sensory System Herlihy: The Human Body in Health and Illness, 6th Edition MULTIPLE CHOICE 1. What is the name of the specialized area of a sensory neuron that detects a specific stimulus? a. Tract b. Receptor c. Dorsal root d. Node of Ranvier ANS: B 2. Photoreceptors detect a. heat. b. acid. c. light. d. tissue distortion. ANS: C 3. A nociceptor detects a. pain. b. light. c. radiation. d. [H+]. ANS: A 4. Olfaction refers to the sense of a. vision. b. taste. c. smell. d. equilibrium. ANS: C 5. The gustatory sensation is most related to the a. eighth cranial nerve. b. rods and cones. c. organ of Corti. d. taste buds. ANS: D 6. The colored part of the eye that contains the intrinsic eye muscles, including the circular muscle and the

(the) a. suspensory ligaments. b. iris. c. retina. d. macula lutea. ANS: B 7. Which structure is attached to the lens, causing its shape to be changed? a. Retina b. Iris c. Cornea d. Suspensory ligaments ANS: D 8. Which of the following is least related to the retina?

a. b. c. d.

Rods and cones Fovea centralis Cornea Macula lutea

10. Which of the following structures secretes tears? a. Lacrimal gland b. Optic disc c. Canal of Schlemm d. Ciliary body ANS: A 11. Which of the following structures is located outside the eye? a. Conjunctiva b. Ciliary body c. Lens d. Vitreous humor ANS: A 12. Rods a. are concentrated in the macula lutea. b. detect red, yellow, and blue colors. c. are concerned with night vision. d. are located in the occipital lobe. ANS: C 13. Which layer of the eyeball supplies blood to the retina? a. Rods and cones b. Sclera c. Choroid d. Iris ANS: C 14. The superior rectus muscle a. causes miosis. b. causes mydriasis. c. moves the eyeball. d. regulates accommodation. ANS: C 15. Which of the following is located in the posterior cavity of the eyeball? a. Vitreous humor b. Cornea c. Lens d. Ciliary muscle ANS: A 16. Which of the following is least related to the optic nerve? a. Cranial nerve II b. Sensory nerve c. Conveys information from the retina to the occipital lobe d. Innervates the extrinsic eye muscles ANS: D 17. An increase of intraocular pressure is most likely to cause a. cataracts. b. damage to the retina, leading to blindness. c. macular degeneration. d. night blindness. ANS: B 18. The sclera

a. b. c. d

is the outer layer of the eyeball. contains the rods and cones. secretes aqueous humor. i th tt h t it f th

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20. What is the location of the semicircular canals and the cochlea? a. Inner ear b. Middle ear c. Outer ear d. Pharynx ANS: A 21. The malleus, incus, and stapes are called (the) a. organ of Corti. b. hearing receptors. c. ossicles. d. cartilage. ANS: C 22. These hairlike receptors are located in the cochlea. a. Ossicles b. Rods and cones c. Organ of Corti d. Adenoids ANS: C 23. What is the name of the tube that connects the pharynx and middle ear? a. Vestibule b. Oval window c. Eustachian d. Cochlea ANS: C 24. Which structure separates the outer ear from the middle ear? a. Tympanic membrane b. Pinna c. Round window d. Oval window ANS: A 25. Which ossicle sits in the oval window? a. Malleus b. Hammer c. Stapes d. Incus ANS: C 26. Bone conduction occurs in the a. outer ear. b. middle ear. c. inner ear. d. semicircular canals. ANS: B 27. Cerumen collects in the a. middle ear. b. inner ear. c. outer ear. d. eustachian tube. ANS: C 28. Which of the following is least related to the vestibulocochlear nerve?

a. b. c. d

Cranial nerve VIII Cochlear branch sends information to the temporal lobe Concerned with both hearing and balance Cl ifi d t

30. Which cerebral lobe is concerned primarily with hearing? a. Occipital b. Cerebellum c. Corpus callosum d. Temporal ANS: D 31. What is the condition caused by impaired drainage of aqueous humor through the canal of Schlemm that

pressure? a. Cataracts b. Glaucoma c. Strabismus d. Conjunctivitis ANS: B 32. Rods and cones are a. glial cells. b. refracting structures. c. visual reflexes. d. visual receptors. ANS: D 33. What is the condition caused by unequal tension exerted by the extrinsic eye muscles? a. Pink eye b. Strabismus c. Glaucoma d. Cataracts ANS: B 34. What does a “choked disc,” or papilledema, indicate? a. Increased intraocular pressure b. Glaucoma c. Increased intracranial pressure d. Strabismus ANS: C 35. What is the effect of contraction and relaxation of the ciliary muscle? a. Dilated pupil b. Change in the shape of the lens c. Raised eyelid d. Blinking ANS: B 36. The gel-like substance that gently pushes the retina against the choroid and maintains the shape of the ey a. aqueous humor. b. vitreous humor. c. lacrimal secretions. d. perilymph. ANS: B 37. What is the function of the vestibule and the semicircular canals? a. Hearing b. Smell c. Balance d. Touch and pressure ANS: C

38. Which of the following is most related to refraction? a. Rods and cones b. Retina

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40. Which of the following is concerned with the sense of smell? a. Vestibulocochlear nerve b. Eighth cranial nerve c. Organ of Corti d. Olfaction ANS: D 41. There is a heavy concentration of cones in this area of the retina. a. Fovea centralis b. Iris c. Optic disc d. Cornea ANS: A 42. What is the name of the venous sinuses that drain the aqueous humor? a. Lateral canthus b. Macula lutea c. Canal of Schlemm d. Pupil ANS: C 43. Which structure is affected by the contraction and relaxation of the ciliary muscles? a. Cornea b. Lens c. Macula lutea d. Optic chiasm ANS: B 44. Which of the following is considered the blind spot? a. Macula lutea b. Optic chiasm c. Fovea centralis d. Optic disc ANS: D 45. In which condition is the eyelid not completely raised, thereby making the person appear sleepy? a. Glaucoma b. Cataracts c. Ptosis of the lid d. Lid lag ANS: C 46. Myopia, farsightedness, and astigmatism are a. errors of refraction. b. infections of the eye. c. types of strabismus. d. conditions of elevated intraocular pressure. ANS: A 47. Lysozyme, an enzyme with antimicrobial activity, is found in a. tears. b. vitreous humor. c. aqueous humor. d. endolymph. ANS: A 48. The Eustachian tube connects the pharynx (throat) with which structure?

a. b. c. d

Cochlea Semicircular canals Middle ear E t l dit

t

50. What is another name for the tympanic membrane? a. Stirrup b. Oval window c. Eardrum d. Organ of Corti ANS: C 51. Which ossicle picks up vibrations from the tympanic membrane? a. Stapes b. Malleus c. Stirrup d. Incus ANS: B 52. Cerumen is a. earwax. b. inner ear fluid. c. fluid that bends the organ of Corti. d. inner ear fluid that stimulates the balance receptors in the semicircular canals. ANS: A 53. Which of the following is most related to the stapes? a. Cerumen b. Semicircular canal c. Organ of Corti d. Middle ear ossicle ANS: D 54. The optic nerve a. receives sensory information from mechanoreceptors. b. transmits sensory information to the temporal lobe. c. is cranial nerve III. d. receives sensory information from the retina. ANS: D 55. The occipital lobe a. receives information from cranial nerve III. b. sends motor information to the iris, thereby controlling pupillary size. c. receives sensory information from cranial nerve II. d. contains the primary auditory cortex. ANS: C 56. The choroid a. contains the blood vessels that nourish the retina. b. secretes aqueous humor. c. is the window of the eye. d. is avascular. ANS: A 57. Tactile receptors are a. located behind the lens in the vitreous humor. b. located within the semicircular canals. c. activated by touch and pressure. d. nociceptors. ANS: C 58. The medial canthus and lateral canthus are

a. b. c. d

corners of the eye where the upper and lower eyelids meet. lacrimal glands. ducts through which tears drain into the nose. it f tt h t f th di l d l t l t l...