Dashboard My Courses My Messages My Documents Request Transcript Contarct BIOD 1
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Dashboard My Courses My Messages My Documents Request Transcript Contarct BIOD 151 - Essential Lab Human Anatomy & Physi notebook calculator font OWA, window AATA Exam Page 2 Answer the following five questions: Describe the function of the Temporalis muscle. - Click here to enter The masseter performs which of the following movements of the mandible? a. Elevation b. Lateral motion c. Medial motion d. Protraction e. Retraction 1. All of the above The muscles of mastication are innervated by which cranial nerve? (Include the specific branch.) Describe the action of the sternocleidomastold muscle when it contracts unilaterally and when it contracts bilaterally ortage Learing All Rigts Reserved & Web Design 0Explanation / Answer
1-Temporalis is a fan shaped muscle
originating from the floor of temporal fossa and inserted to the coronoid process of mandible
The actions of the muscle are
2- Masseter muscle actions are
3 -The muscles of mastication are innervated by the mandibular division of the Trigeminal nerve ( 5th cranial nerve )
4- Actions of Sternocleido mastoid muscle
Acting unilaterally it pulls the head towards the same shoulder and rotates the head carrying the face to the opposite shoulder
Acting Bilaterally from below they help in protract the head to maintain the horizontal gaze ,from above they elevate the thorax and act as accessory muscles of inspiration
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