Anatomy of the Neck Quiz

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Questions and Answers

What is the nerve supply of the platysma muscle?

  • Hypoglossal nerve
  • Ansa cervicalis (ventral rami of C1-C3)
  • Accessory nerve (motor) and branches from ventral rami of C2 and C3
  • Cervical branch of facial nerve (correct)

What is the action of the sternocleidomastoid (SCM) muscle when contracted bilaterally?

  • Flexion of the head and neck, especially against resistance (correct)
  • Depression of the hyoid bone
  • Lateral flexion of the head and neck to the same side
  • Rotation of the head and neck to the opposite side

Which muscle is responsible for depressing the hyoid bone?

  • Sternothyroid
  • Sternohyoid (correct)
  • Omohyoid
  • Thyroid

Where does the inferior belly of the omohyoid muscle attach?

<p>Superior border of scapula (B)</p> Signup and view all the answers

What is the function of the thyroid muscle?

<p>Elevate the larynx (A)</p> Signup and view all the answers

Which muscle divides the anterolateral part of the neck into anterior and posterior triangles?

<p>Sternocleidomastoid (A)</p> Signup and view all the answers

What structure extends anteriorly from the inferior border of the mandible to the superior border of the manubrium?

<p>The neck (C)</p> Signup and view all the answers

Which compartment of the neck contains the cervical vertebrae, spinal cord, cervical spinal nerves, and muscles?

<p>The vertebral compartment (D)</p> Signup and view all the answers

Which nerve innervates the skin over the angle of the mandible, parotid gland, and both surfaces of the lower part of the auricle?

<p>The great auricular nerve (A)</p> Signup and view all the answers

At what level is the hyoid bone located?

<p>C3 (B)</p> Signup and view all the answers

Which nerve innervates the skin over the upper part of the pectoral major and deltoid muscles?

<p>The supraclavicular nerves (D)</p> Signup and view all the answers

Which nerve innervates the skin over the lateral part of the occipital region and upper part of the medial surface of the auricle?

<p>The lesser occipital nerve (B)</p> Signup and view all the answers

Flashcards

Platysma nerve supply?

Cervical branch of the facial nerve.

SCM bilateral contraction?

Flexion of the head and neck, especially against resistance.

Muscle that depresses hyoid?

Depresses the hyoid bone.

Omohyoid inferior belly attachment?

Superior border of the scapula.

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Function of the thyrohyoid muscle?

Elevates the larynx.

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Neck muscle dividing triangles?

Sternocleidomastoid (SCM).

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From mandible to manubrium?

The neck.

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Neck's spinal contents?

The vertebral compartment.

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Innervation: mandible angle, parotid, lower auricle?

The great auricular nerve.

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Hyoid bone vertebral level?

C3.

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Innervation: pectoral/deltoid skin?

The supraclavicular nerves.

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Innervation: lateral occipital, upper auricle?

The lesser occipital nerve.

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