Temporalis muscle originates from:

 # Temporalis muscle originates from:

A. Side of the skull

B. Zygomatic process

C. Ramus of the mandible

D. Pterygopalatine fossa

The correct answer is A. Side of the skull.

Temporalis muscle arises from temporal fossa and temporal fascia and inserts into deep surface of coronoid and anterior border of the ramus of mandible. 

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Medial pterygoid muscle is attached to:

 # Medial pterygoid muscle is attached to:

A. Medial surface of lateral pterygoid plate

B. Lateral surface of medial pterygoid plate

C. Medial surface of medial pterygoid plate

D. Lateral surface of lateral pterygoid plate

The correct answer is A. Medial surface of the lateral pterygoid plate

Deep head of the medial pterygoid muscle arises from medial surface of lateral pterygoid plate and palatine bone. The lateral pterygoid muscle arises from lateral surface of lateral pterygoid plate.

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Lymphatic drainage of TMJ:

 # Lymphatic drainage of TMJ is mainly to:

A. Submandibular nodes

B. Submental nodes

C. Deep cervical nodes

D. Parotid nodes

The correct answer is D. Parotid nodes.

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Nerve supply of Capsule of TMJ:

 # Which of the following supplies capsule of TMJ?

A. Facial nerve

B. Auriculotemporal nerve

C. Branch of maxillary nerve

D. First cervical nerve

The correct answer is B. Auriculotemporal nerve.

Sensory nerve supply: Sensory innervation of the TMJ is derived from the auriculotemporal and masseteric branches of V3 (otherwise known as the mandibular branch of the trigeminal nerve).

Blood supply of TMJ: Its arterial blood supply is provided by branches of the external carotid artery, predominantly the superficial temporal branch. Other branches of the external carotid artery, namely, the deep auricular artery, anterior tympanic artery, ascending pharyngeal artery, and maxillary artery, may also contribute to the arterial blood supply of the joint.

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