Human Anatomy: Muscles of the Neck

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Questions and Answers

What is the primary function of the geniohyoid muscle?

  • Stabilizes the sternum
  • Depresses the hyoid bone
  • Elevates the hyoid and depresses the mandible (correct)
  • Elevates the mandible and retracts the tongue

Which cranial nerve innervates the suprahyoid muscles?

  • CN II
  • CN X
  • CN XI
  • CN V3 (correct)

What is the role of the external carotid artery branches?

  • They exclusively connect to deep cervical structures
  • They primarily supply superficial structures in the face and neck (correct)
  • They supply blood to the brain
  • They mediate nerve signals in the neck

Which of the following muscles is classified as an infrahyoid muscle?

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

What is a recognized function of the scaleni muscles?

<p>Elevation of the first rib and lateral flexion of the neck (D)</p> Signup and view all the answers

Which muscles are classified as infrahyoid muscles?

<p>Sternohyoid, Sternothyroid, Thyrohyoid, Omohyoid (C)</p> Signup and view all the answers

What is the primary function of the sternocleidomastoid muscle?

<p>Neck flexion and rotation (A)</p> Signup and view all the answers

Which structure is located within the carotid triangle?

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

Which of the following statements regarding the scaleni musculature is correct?

<p>They assist with neck flexion and lateral flexion. (B)</p> Signup and view all the answers

Which arteries are specifically branches of the external carotid artery?

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

What is the relationship between the ansa cervicalis and the infrahyoid muscles?

<p>It supplies motor innervation to them. (A)</p> Signup and view all the answers

Which of the following is NOT a superficial branch of the cervical plexus?

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

What forms the roof of the anterior triangle?

<p>Investing fascia and platysma (D)</p> Signup and view all the answers

Which of the following muscles is classified as an infrahyoid muscle?

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

What is the primary function of the sternocleidomastoid muscle?

<p>Flexing the neck and rotating the head (D)</p> Signup and view all the answers

Which of these structures is NOT surrounded by the pretracheal fascia?

<p>Scalene muscles (D)</p> Signup and view all the answers

Which of the following best describes the scaleni musculature?

<p>They primarily assist in elevating the first two ribs. (D)</p> Signup and view all the answers

What is the role of the ansa cervicalis?

<p>It innervates most of the infrahyoid muscles. (D)</p> Signup and view all the answers

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

<p>Facial artery (D)</p> Signup and view all the answers

Which fascia serves as the floor of the posterior triangle of the neck?

<p>Prevertebral fascia (D)</p> Signup and view all the answers

Which of the following describes the external jugular vein's location?

<p>Superficial to the investing fascia (D)</p> Signup and view all the answers

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