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DHT4 Anatomy Questions And Answers
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  • DHT 2

Superior deep nodes ~ adjacent to internal jugular; drains max 3rd molars, post hard palate, soft palate, base of tongue; empties into inferior deep cervical inferior deep nodes ~ deep to SCM; drains most lymph from head; communicates with axillary lymph which can cause breast cancer; em...

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  • August 8, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • dht4 anatomy questions and answers

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  • DHT 2
  • DHT 2

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DHT4 Anatomy Questions
And Answers

muscles of mastication


✓~ temporalis, masseter, medial pterygoid, lateral pterygoid




smile muscles


✓~ zygo major and minor, orbicularis oris, levator labii superioris, levator

anguli oris, risorius




origin


✓~ the bone where the muscle connects; less moveable




insertion


✓~ where the muscles attaches, tends to be moved by the contraction of

the muscle




facial expression

, ✓~ speech, expression, mastication, innervated by the VII cranial nerve;

facial paralysis




orbicular oris


✓~ O: skin of labial mucosa; I: philtrum and both commissures; Action:

closes lips, kissing, pursing




buccinator


✓~ O: anterior part of cheek, pterygomandibular raphe, 1st and 2nd

molar; I: skin at the angle of mouth; Action: pulls mouth laterally, shortens

cheek, keeps food on tooth surface




risorius


✓~ O: superficial fascia of masseter; I: skin at the angle of mouth; Action:

widens the mouth




Levator labii superioris


✓~ O: infraorbital rim, frontal process of maxilla; I: skin of the upper lip

and all of the nose; Action: elevates upper lip

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