Suprahyoid Muscles Anatomy
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Suprahyoid Muscles Anatomy

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Questions and Answers

Which group of muscles is located superiorly to the hyoid bone of the neck?

  • Laryngeal muscles
  • Suprahyoid muscles (correct)
  • Pharyngeal muscles
  • Infrahyoid muscles
  • What is the action of the stylohyoid muscle?

  • Arises from the digastric fossa of the mandible
  • Attaches to the mastoid process of the temporal bone
  • Depresses the mandible and elevates the hyoid bone
  • Initiates a swallowing action by pulling the hyoid bone in a posterior and superior direction (correct)
  • Which artery supplies the suprahyoid muscles?

  • Facial artery (correct)
  • Subclavian artery
  • Carotid artery
  • Brachial artery
  • What nerve innervates the stylohyoid muscle?

    <p>Stylohyoid branch of the facial nerve (CN VII)</p> Signup and view all the answers

    In some cadaveric specimens, the tendon of which muscle can be seen to pierce the stylohyoid muscle?

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

    From where does the anterior belly of the digastric muscle arise?

    <p>Digastric fossa of the mandible</p> Signup and view all the answers

    What action does the digastric muscle perform?

    <p>Depresses the mandible and elevates the hyoid bone</p> Signup and view all the answers

    Which nerve innervates the anterior belly of the digastric muscle?

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

    What is the action of the mylohyoid muscle?

    <p>Elevates the hyoid bone</p> Signup and view all the answers

    Which nerve innervates the posterior belly of the digastric muscle?

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

    What is the origin of the mylohyoid muscle?

    <p>Mylohyoid line of the mandible</p> Signup and view all the answers

    Which nerve innervates the geniohyoid muscle?

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

    Which muscle forms the floor of the oral cavity?

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

    What action does the geniohyoid muscle perform?

    <p>Depresses the mandible</p> Signup and view all the answers

    What nerve innervates the mylohyoid muscle?

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

    From where does the geniohyoid muscle arise?

    <p>Mental spine of the mandible</p> Signup and view all the answers

    What is the action of the digastric muscle?

    <p>Elevates the hyoid bone and the floor of the mouth</p> Signup and view all the answers

    Which nerve innervates the stylohyoid muscle?

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

    Which muscle forms the floor of the oral cavity?

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

    Study Notes

    Suprahyoid Muscles

    • Group of 4 muscles located superiorly to the hyoid bone of the neck
    • Function: elevate the hyoid bone, involved in swallowing
    • Arterial supply: branches of the facial artery, occipital artery, and lingual artery

    Stylohyoid Muscle

    • Thin muscular strip located superiorly to the posterior belly of the digastric muscle
    • Attachments: arises from the styloid process of the temporal bone, attaches to the lateral aspect of the hyoid bone
    • Actions: initiates a swallowing action by pulling the hyoid bone in a posterior and superior direction
    • Innervation: stylohyoid branch of the facial nerve (CN VII), arises proximally to the parotid gland

    Digastric Muscle

    • Comprised of two muscular bellies connected by a tendon
    • Attachments:
      • Anterior belly arises from the digastric fossa of the mandible
      • Posterior belly arises from the mastoid process of the temporal bone
      • Intermediate tendon attached to the hyoid bone via a fibrous sling
    • Actions: depresses the mandible and elevates the hyoid bone

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    The Suprahyoid Muscles PDF

    Description

    Test your knowledge about the anatomy of the suprahyoid muscles, a group of 4 muscles located in the neck area superior to the hyoid bone. Learn about their actions, attachments, and arterial supply.

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