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Questions and Answers
What is the origin of the temporalis muscle?
From where does the lateral pterygoid muscle's upper head originate?
Which nerve supplies the medial pterygoid muscle?
What action is performed by the lateral pterygoid muscle?
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What is the main trunk that supplies the temporalis muscle?
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Study Notes
Origin of Muscles
- The temporalis muscle originates from the temporal fossa and the deep surface of the temporal fascia.
Lateral Pterygoid Muscle
- The upper head of the lateral pterygoid muscle originates from the infratemporal surface and the greater wing of the sphenoid bone.
Innervation of Muscles
- The medial pterygoid muscle is supplied by the mandibular division of the trigeminal nerve.
Actions of Muscles
- The lateral pterygoid muscle performs the action of depression and protrusion of the mandible.
Blood Supply
- The main trunk that supplies the temporalis muscle is the deep temporal arteries.
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Description
Test your knowledge of the origin and insertion points of the muscles involved in mastication. This quiz covers the temporalis, masseter, and lateral pterygoid muscles as well as their specific attachment points.
