Submental and Submandibular Triangles Anatomy
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Questions and Answers

What muscle forms the floor of the submental triangle?

  • Digastric muscle
  • Mylohyoid muscle (correct)
  • Geniohyoid muscle
  • Stylohyoid muscle
  • Which structure does the submandibular triangle contain?

  • Thyroid gland
  • Facial artery (correct)
  • Parotid gland
  • Sublingual gland
  • What forms the boundaries of the carotid triangle?

  • Mylohyoid muscle, hypoglossal nerve, and middle constrictor of pharynx
  • Facial artery, lingual nerve, and submandibular gland
  • Superior belly of omohyoid, anterior belly of digastric, and body of the hyoid bone
  • Anterior border of sternocleidomastoid, superior belly of omohyoid, and posterior belly of digastric muscles (correct)
  • Which muscle forms the floor of the muscular triangle?

    <p>Mylohyoid muscle</p> Signup and view all the answers

    Which nerve is found within the submandibular triangle?

    <p>Lingual nerve</p> Signup and view all the answers

    Which vessel is part of the contents of the carotid triangle?

    <p>Common carotid artery</p> Signup and view all the answers

    What is the primary action of the scalenus anterior muscle when acting unilaterally?

    <p>Bends the neck laterally</p> Signup and view all the answers

    Where does the common carotid artery originate on the left side of the body?

    <p>Aortic arch</p> Signup and view all the answers

    Which of the following is a branch of the external carotid artery?

    <p>Superior thyroid artery</p> Signup and view all the answers

    Where is the carotid glomus (chemoreceptor) located?

    <p>Posterior to the bifurcation of the common carotid artery</p> Signup and view all the answers

    What is the chief extracranial tributary of the internal jugular vein?

    <p>Facial vein</p> Signup and view all the answers

    Where does the subclavian vein join the internal jugular vein to form the brachiocephalic vein?

    <p>At the lateral border of the first rib</p> Signup and view all the answers

    What structures are found in the occipital triangle of the lateral region of the neck?

    <p>Scalenus anterior, scalenus medius, scalenus posterior</p> Signup and view all the answers

    What divides the lateral region of the neck into occipital and supraclavicular triangles?

    <p>Inferior belly of omohyoid</p> Signup and view all the answers

    Which structures are found within the supraclavicular triangle?

    <p>Subclavian vein, subclavian artery, brachial plexus</p> Signup and view all the answers

    What is the floor of the occipital triangle made up of in the lateral region of the neck?

    <p>Prevertebral fascia and scalenus muscles</p> Signup and view all the answers

    Which nerve emerges above the middle of the posterior border of sternocleidomastoid and crosses the occipital triangle to trapezius?

    <p>Accessory nerve</p> Signup and view all the answers

    What boundaries define the lateral region of the neck?

    <p>Posterior border of sternocleidomastoid, anterior border of trapezius, middle third of clavicle</p> Signup and view all the answers

    Which vein is formed behind the angle of mandible by the union of posterior auricular, posterior branch of retromandibular, and occipital vein?

    <p>External jugular vein</p> Signup and view all the answers

    Where do the anterior cervical lymph nodes lie?

    <p>Near the sternocleidomastoid muscle</p> Signup and view all the answers

    Which lymphatic vessels do the deep lateral cervical lymph nodes receive lymph from?

    <p>Head and neck</p> Signup and view all the answers

    Where does the right lymphatic duct end by entering?

    <p>Right venous angle</p> Signup and view all the answers

    Which structures does the thoracic duct receive just before termination?

    <p>Left jugular, subclavian, and bronchomediastinal trunks</p> Signup and view all the answers

    Where do the cutaneous branches of the cervical plexus emerge to supply skin?

    <p>Around the middle of the posterior border of sternocleidomastoid</p> Signup and view all the answers

    Which muscle hooks around the external carotid artery before entering the tongue?

    <p>Hyoglossus</p> Signup and view all the answers

    Which part of the sympathetic trunk is formed by superior, middle, and inferior cervical ganglia?

    <p>Cervical part of sympathetic trunk</p> Signup and view all the answers

    What is the boundary of the lateral region of the neck superiorly?

    <p>Superior nuchal line</p> Signup and view all the answers

    Which triangle in the neck contains the submandibular gland?

    <p>Carotid triangle</p> Signup and view all the answers

    Which nerve is not found in the superficial fascia of the neck?

    <p>Cervical branch of facial nerve</p> Signup and view all the answers

    Which vessel lies on the hyoglossus muscle before entering the tongue?

    <p>External carotid artery</p> Signup and view all the answers

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