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GI Week 1 > Head and Neck Anatomy ILT > Flashcards

Head and Neck Anatomy ILT Flashcards

1
Q

What nerve supplies the muscles of mastication?

A

CN V3 - Mandibular Nerve (largest of three divisions of trigeminal)

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2
Q

What muscles of mastication are involved in Positioning Food?

A
  • Lips
  • Tongue
  • Buccinator
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3
Q

What muscles of mastication are involved in Grinding movement?

A

Alternating unilateral contraction of pterygoids, temporalis

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4
Q

What muscles of mastication are involved in Closing the Jaw?

A

Temporalis, Masseter, Medial pterygoid

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5
Q

What muscles of mastication are involved in Opening the Jaw?

A

Gravity, Lateral pterygoid, mylohyoid, geniohyoid, anterior digastric

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6
Q

What are the attachments of the Lateral Pteryoid Muscle?

A

Origin: Great wing of sphenoid & Pterygoid plate
Insertion: Condyloid process of the mandible

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7
Q

What are the attachments of the Mylohyoid Muscle?

A

Origin: Mylohyoid line (mandible)
Insertion: Body of hyoid bone and median ridge

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8
Q

What are the attachments of the Geniohyoid Muscle?

A

Origin: Inferior mental spine of mandible
Insertion: Hyoid bone

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9
Q

What are the attachments of the Anterior Digastric Muscle?

A

Origin: Digastric fossa (mandible)
Insertion: Intermediate tendon (hyoid bone)

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10
Q

What are the attachments of the Temporalis Muscle?

A

Origin: Temporal lines on the parietal bone of the skull and superior temporal surface of the sphenoid bone
Insertion: Coronoid process of the mandible

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11
Q

What are the attachments of the Masseter Muscle?

A

Origin: Zygomatic arch and Maxilla
Insertion: Coronoid process, Ramus of Mandible, Cementomaxillary tendon, Cementomandibular tendon

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12
Q

What are the attachments of the Medial Pterygoid Muscle?

A

Origin: Deep head: medial side of lateral pterygoid plate behind the upper teeth
Superficial head: Pyramidal process of palatine bone and maxillary tuberosity
Insertion: Medial Angle of the Mandible

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13
Q

What are the attachments of the Buccinator muscle?

A

Origin: Alveolar process of the maxillary bone and Mandible, temporomandibular joint
Insertion: Fibers of the orbicularis oris

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14
Q

What are the attachments of the Tongue muscle?

A

Origin: Close to the epiglottis, from the median fibrous septum

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15
Q

What are the attachments of the Lips Muscle (Orbicularis Oris)?

A

Origin: Maxilla and Mandible
Insertion: Skin around lips

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GI Week 1 (14 decks)

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