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Some examples from this set of practice questions
1.
Temporalis
Answer: Origin: Temporal fossa Insertion: Coronoid process and anterior border of the ramus of the mandible Function: (2) 1. Elevates the mandible @ TMJ 2. Retracts the mandible @ TMJ Nerve: Mandibular branch of trigeminal nerve (cranial nerve 5)
2.
Masseter
Answer: Origin: Inferior part of zygomatic arch Insertion: Angle and ramus of mandible Function: (2) 1. Elevates the mandible @ TMJ 2. Protracts the mandible @ TMJ Nerve: Mandibular branch of trigeminal nerve (cranial nerve 5)
3.
Medial pterygoid
Answer: Origin: Medial surface of the lateral pterygoid plate of the pterygoid process of the sphenoid bone Insertion: Internal surface of the angle and inferior border of the ramus of the mandible Function: (3) 1. Elevates the mandible @ TMJ 2. Protracts the mandible @ TMJ 3. Contralaterally deviates the mandible @ TMJ Nerve: Mandibular branch of the trigeminal nerve (cranial nerve 5)
4.
Occipitalis
Answer: Origin: Occipital bone and mastoid process of temporal bone Insertion: Galea aponeurotica Function: (3) 1. Draws scalp posteriorly (occipitalis) 2. Draws scalp anteriorly (frontalis) 3. Elevates eyebrow (frontalis) Nerve: Facial nerve (Cranial nerve 7)
5.
Frontalis
Answer: Origin: Galea aponeurotica Insertion: Fascia and skin superior to the eye and nose Function: (3) 1. Draws scalp posteriorly (occipitalis) 2. Draws scalp anteriorly (frontalis) 3. Elevates eyebrow (frontalis) Nerve: Facial nerve (Cranial nerve 7)
6.
Auricularis anterior
Answer: Origin: Galea aponeurotica Insertion: Anterior ear Function: (3) 1. Draws the ear anteriorly (anterior) 2. Elevates the ear (superior) 3. Draws the ear posteriorly (posterior) Nerve: Facial nerve (Cranial nerve 7)
7.
Auricularis superior
Answer: Origin: Galea aponeurotica Insertion: Superior ear Function: (3) 1. Draws the ear anteriorly (anterior) 2. Elevates the ear (superior) 3. Draws the ear posteriorly (posterior) Nerve: Facial nerve (Cranial nerve 7)
8.
Auricularis posterior
Answer: Origin: Mastoid part of the temporal bone Insertion: Posterior ear Function: (3) 1. Draws the ear anteriorly (anterior) 2. Elevates the ear (superior) 3. Draws the ear posteriorly (posterior) Nerve: Facial nerve (Cranial nerve 7)
9.
Orbital part of Orbicularis oculi muscle:
Answer: Origin: 1. Nasal part of the frontal bone 2. Frontal process of the maxilla (and medial palpebral ligament) Insertion: Returns to the same attachment Function: (3) 1. Closes and squints the eyes (orbital part) 2. Blinking (palpebral part) 3. Removal of tear (lacrimal part) Nerve: Facial nerve (Cranial nerve 7)
10.
Palpebral part of Orbicularis oculi muscle:
Answer: Origin: Medial palpebral ligament Insertion: Lateral palpebral ligament Function: (3) 1. Closes and squints the eyes (orbital part) 2. Blinking (palpebral part) 3. Removal of tear (lacrimal part) Nerve: Facial nerve (Cranial nerve 7)
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