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Head and Neck Anatomy Quiz
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Head and Neck Anatomy Quiz

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@CleverPolynomial

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Questions and Answers

What forms the boundaries of the root of the neck laterally?

  • Scalenus anterior muscle
  • First ribs and their costal cartilages (correct)
  • First thoracic vertebra
  • Manubrium of the sternum
  • Which muscle is the key muscle around which other structures are arranged?

  • Scalenus anterior (correct)
  • Infrahyoid strap muscle
  • Scalenus posterior
  • Scalenus medius
  • What passes through the root of the neck?

  • Only structures from the head and neck to the thorax
  • Only structures from the upper limb to the thorax
  • All structures from the head, neck, and thorax to the upper limb (correct)
  • Only structures from the thorax to the head and neck
  • Which of the following veins forms the brachiocephalic veins?

    <p>Only a and b</p> Signup and view all the answers

    Which nerve crosses the root of the neck medial to the scalenus anterior muscle?

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

    What is the anterior boundary of the root of the neck?

    <p>Manubrium of the sternum</p> Signup and view all the answers

    What is the posterior boundary of the root of the neck?

    <p>Body of the first thoracic vertebra</p> Signup and view all the answers

    Which of the following arteries is not a branch of the brachiocephalic trunk?

    <p>Thoracic artery</p> Signup and view all the answers

    Which structure terminates at the root of the neck?

    <p>Thoracic duct</p> Signup and view all the answers

    Which muscle is not a scalene muscle?

    <p>Infrahyoid strap muscle</p> Signup and view all the answers

    Study Notes

    Thyroid Gland Morphology

    • Located in the lower front part of the neck, weighing around 30 grams, slightly heavier in females
    • Consists of right and left lobes connected by the isthmus
    • Isthmus is midway between the "Adams apple" and the suprasternal notch
    • Has two main functions: controls the rate of metabolism and calcium metabolism
    • Produces two hormones: thyroid hormone and calcitonin

    Parathyroid Glands

    • Four glands, normally the size of a pea
    • Major disease: hyperparathyroidism, causing calcium imbalance
    • Anterior relations include the infrahyoid strap muscles of the neck

    Root of the Neck

    • Area above the inlet of thorax, bounded laterally by the first ribs and their costal cartilages, anteriorly by the manubrium of the sternum, and posteriorly by the body of the first thoracic vertebra
    • Arrangement of scalene muscles: scalenus anterior is a key muscle, with structures arranged around it
    • Note: lung apices at root of neck

    Organisation of the Root of the Neck

    • All structures passing from the head, neck to the thorax, and from the thorax to the head, neck
    • Thorax to upper limb pass through the root of the neck
    • Contents: scalene muscles, internal jugular veins and subclavian veins, brachiocephalic trunk with its branches, thoracic duct, vagus and phrenic nerves, trachea, and oesophagus

    Nerves Crossing the Root of Neck

    • Phrenic nerve crossing scalenus anterior
    • Vagus, recurrent laryngeal, and sympathetic trunk are medial to scalenus anterior

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    Description

    Test your knowledge of the topography and organization of structures in the root of the neck, including muscles, blood vessels, and nerves, as well as the morphology and anatomy of the thyroid gland.

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