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rior triangle contains the occipital and supra-clavicular (omoclavicular or subclavian) trian-gles (Moore, p 1004).

109. (E) The posterior cervical triangle contains thesplenius capitis, levator scapulae, middle sca-

lene, and posterior scalene (Moore, p 1004).

110. (A) The suprahyoid muscles are the mylo-hyoid, geniohyoid, stylohyoid, and digastricmuscles (Moore, p 1016).

111. (A) The mylohyoid and anterior belly of thedigastric are innervated by the trigeminal nerve(Moore, p 1016).

112. (C) The anterior vertebral muscles are the lon-

gus colli, longus capitis, rectus capitis anterior,and rectus capitis lateralis (Moore, p 1026).

113. (A) The only lateral vertebral muscle that isinnervated by dorsal rami is the splenius capi-tis (Moore, p 1026).

114. (A) There is NOT a middle thyroid artery, butthere is a middle thyroid vein (Moore, pp 10301033).

115. (B) Arytenoids, corniculate, and cuneiformcartilages are paired, whereas the thyroid, cri-coid, and epiglottic are single (Moore, p 1038).

116. (C) All intrinsic laryngeal muscles are inner-vated by the recurrent laryngeal nerve exceptthe cricothyroid, which is innervated by theexternal laryngeal nerve (Moore, p 1045).

117. (A) The cricothyroid stretches and tenses thevocal fold (Moore, p 1045).

118. (E) The posterior cricoarytenoid abducts thevocal fold (Moore, p 1045).

119. (C) The internal laryngeal nerve is the sensorynerve of the larynx (Moore, p 1048).

120. (A) The pharyngeal tonsils are commonlyreferred to as the adenoids (Moore, p 1051).

121. (E) The salpingopharyngeus is innervated bythe glossopharyngeal nerve. The three con-

strictors, palatopharyngeus, and salpingopha-ryngeus are innervated by the cranial root ofthe accessory nerve (Moore, p 1056).

122. (A) The superior constrictor inserts on themedian raphe of the pharynx and the pharyn-

geal tubercle on the basilar part of the occipitalbone (Moore, p 1056).

123. (B) The ascending palatine artery, levator velipalatini, and pharyngotympanic tube passthrough the gap between the superior con-strictor and the skull (Moore, pp 1055, 1058).

124. (A) The glossopharyngeal nerve, stylopharyn-geus, and stylohyoid ligament pass throughthe gap between the superior and middle con-

strictors (Moore, p 1058).

125. (A) The superior laryngeal artery and vein andthe internal laryngeal nerve pass through thegap between the middle and inferior constric-tors (Moore, p 1058).

126. (D) The inferior laryngeal artery and recurrentlaryngeal nerve pass through the gap inferiorto the inferior constrictor (Moore, p 1058).

127. (A) A Le Fort I fracture is a horizontal fractureof the maxillae (Moore, p 836).

128. (B) The mastoid processes are absent at birth.Therefore, the facial nerves are close to the sur-face when they emerge from the stylomastoidforamina and may be injured during delivery(Moore, p 847).

129. (D) The site of anesthetic injection to block theinferior alveolar nerve is the mandibular fora-men (Moore, p 861).

130. (E) A lesion of the zygomatic branch of CN VIIwould cause paralysis of the orbicularis oculiand therefore a drooping of the lower eyelid.Subsequently, tears would fail to spread overthe cornea, resulting in a corneal scar and there-fore impaired vision (Moore, p 864).

131. (C) The facial veins make clinically importantconnections with the cavernous sinus through

138 7: The Head and Neck