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59. (D) The superior oblique abducts, depresses,and rotates the eyeball medially (Moore, p 910).

60. (A) The long ciliary nerves convey post-synaptic sympathetic fibers to the dilator pupil-lae and afferent fibers from the iris and cornea

(Moore, pp 911912).

61. (B) Afferent fibers from the iris and cornea passthrough the ciliary ganglion (Moore, p 912).

62. (E) The infraorbital artery is a branch of thethird part of the maxillary artery (Moore, p 913).

63. (C) The short posterior ciliary arteries piercethe sclera near the optic nerve and supply thechoroid, which subsequently supplies the rods

and cones of the retina (Moore, p 913).

64. (E) The infratemporal fossa contains the oticnot the pterygopalatineganglion (Moore,p 920).

65. (A) The buccinator is a muscle of facial expres-sion, not a muscle of mastication (Moore, p 921).

66. (A) The muscles of mastication are associatedwith the first branchial arch and are innervated

by the trigeminal nerve (Moore, p 921).

67. (A) The lateral pterygoids, when actingtogether, depress and protrude the mandible,with the assistance of the suprahyoid mus-cles, infrahyoid muscles, and gravity (Moore,pp 921, 926).

68. (E) The descending palatine artery is a branchof the third (pterygopalatine) part of the max-illary artery (Moore, pp 920, 922).

69. (B) The labyrinthine artery is a branch of thebasilar artery, which is part of the vertebralartery system (Moore, p 895).

70. (D) The artery of the pterygoid canal suppliesthe superior part of the pharynx, the auditorytube, and the tympanic cavity (Moore, p 922).

71. (E) The sphenopalatine artery is transmittedthrough the sphenopalatine foramen along with

the nasopalatine and superior nasal nerves(Moore, pp 922, 950).

72. (C) Postsynaptic parasympathetic fibers passfrom the ganglion to the parotid gland via theauriculotemporal nerve (Moore, pp 922923).

73. (E) The tensor tympani is innervated by themandibular division of the trigeminal nerve(Moore, p 971).

74. (C) The temporomandibular joint is a modi-fied hinge-type synovial joint (Moore, p 923).

75. (A) The hard palate is composed of the pala-tine processes of the maxillary bones as well asthe horizontal plates of the palatine bones

(Moore, p 935).

76. (A) The tensor veli palatini is innervated by themedial pterygoid nerve, which is a branch ofthe mandibular division of the trigeminal nerve(Moore, p 939).

77. (E) The tensor veli palatini tenses the soft pal-ate and opens the mouth of the auditory tubeduring swallowing and yawning (Moore, p 939).

78. (C) The four types of lingual papillae are thevallate papillae, foliate papillae, filiform papil-lae, and fungiform papillae (Moore, pp 940941).

79. (D) The hypoglossal nerve innervates the fourintrinsic muscles of the tongue in addition tothe following three extrinsic muscles of thetongue: genioglossus, hyoglossus, and stylo-glossus. The vagus innervates the palatoglos-sus, which is both an extrinsic tongue muscleand a palate muscle (Moore, p 942).

80. (E) The genioglossus depresses the tongue andassists in protrusion. The hyoglossus depressesand retracts the tongue. The styloglossus re-tracts the tongue and draws it up for swallow-ing. The palatoglossus elevates the posteriorpart of the tongue. The superior and inferiorlongitudinal muscles curl the tip and sides ofthe tongue and shorten it. The transverse nar-rows and elongates the tongue, assisting in pro-trusion. The vertical flattens and broadens thetongue, assisting in protrusion (Moore, p 942).

Answers and Explanations: 4080 135