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Head and Neck Anatomy Muscles Quiz

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Questions and Answers

Where is the origin of the temporalis muscle?

Coronoid process of the mandible
Lower border & medial surface of zygomatic arch
Temporal lines (correct)
Bony floor of temporal fossa

What is the main action of the masseter muscle?

Protraction of the mandible
Elevation and retraction of the mandible
Depression of the mandible
Elevates the mandible to close the teeth in mastication (correct)

What is the boundary of the temporal fossa?

Foramen lacerum, carotid canal, jugular foramen, foramen spinosum
Inferior orbital fissure, optic canal, superior orbital fissure, foramen rotundum
Infraorbital foramen, mental foramen, inferior alveolar canal, incisive foramen
Superior temporal line, frontal process of zygomatic bone, infratemporal crest, upper border of zygomatic arch (correct)

Which nerve supplies the temporalis muscle?

<p>Mandibular division of trigeminal nerve (A)</p> Signup and view all the answers

Which muscle has a fan-shaped structure?

<p>Temporalis muscle (D)</p> Signup and view all the answers

Study Notes

Muscles of Mastication

The origin of the temporalis muscle is the temporal fossa.
The main action of the masseter muscle is to elevate the mandible (close the jaw).
The boundary of the temporal fossa is the temporal line and the infratemporal crest.
The nerve that supplies the temporalis muscle is the deep temporal nerve, a branch of the mandibular division of the trigeminal nerve (V3).
The muscle that has a fan-shaped structure is the temporalis muscle.

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Description

Test your knowledge of head and neck anatomy muscles with this quiz. Identify the muscles, their origins, insertions, nerve supply, and actions based on the given descriptions.