Dental Space

Cervical plexus

Functional groups of the facial muscles #anatomy

During a mixed martial arts (MMA) fight, one fighter punched his opponent in the anterior neck, resulting in a fracture of the hyoid bone. Which of the following muscles would be most directly affected by this injury? 1. Platopharyngeus 2. Stylopharygeus 3. Superior pharyngeal constrictors. 4. Middle pharyngeal constrictors 5. Inferior pharyngeal constrictors Ans / middle pharyngeal constrictors #anatomycase

A surgeon is performing a carotid endarterectomy in a 55-year-old man who has carotid artery occlusion. In approaching the internal carotid artery, the surgeon severs a nerve embedded in the carotid sheath. Which nerve was severed? 1. Vegas 2. Ansa cervicalis 3. XII 4. Optic Ans/ ansa cervicalis #anatomycase

A 24-year-old male was involved in a knife fight in a bar. He appeared in the emergency department with a 2-em laceration in the anterolateral neck. The wound was superficial, but the physician observed muscle fibers just deep to the superficial fascia. Which of the following muscles was observed? 1. Digastric 2. Platysma 3. SCM 4. Omohyoid Ans/ platysma #anatomycase

A 21-year-old professional boxer receives a series of powerfupunches to the side of his face, which fractures the left mandible slightly superior to the mandibular angle as indicated by the arrow on the given CT scan. Resultant muscle spasticity causes his jaw to close, making it difficult to remove himouthpiece. Which of the following muscles is acting to closthe jaw? 1. Temporalis. 2. Buccinator muscle. 3. Masseter muscle. 4. Lateral pterygoids Ans/ Masseter muscle #anatomycase

A newborn baby girl is unable to move her head to the right, even when her pediatrician tries to assist the movement, as seen in the photo. Her range of motion in the neck is limited in rotation and lateral bending, and her head posture is abnormallytilted toward the right and her chin is elevated and turned toward the left side. What muscle is most likely responsible for the baby's abnormal range of movement and head posture? 1. Trapezius. 2. masseter. 3. Sternocleidomastoid. 4. Intercoastal. Ans/ sternocleidomastoid #anatomycase

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