The Face

• What is the title of the course mentioned in the study material?

  DSUR 1128 The Face
• Who is the instructor for the course DSUR 1128?

  Tanya Chamberlain
• What is the primary focus of the learning objectives in the study material?

  To identify and describe the main muscles of facial expression and their nerve supply
• What are the main components of the viscerocranium mentioned in the study material?

  • Skin
  • Subcutaneous Fat
  • Superficial Aponeurotic System
  • Retaining Ligaments
• What is the origin of the Orbicularis Oris muscle?

  Medial aspects of maxilla and mandible, perioral skin and muscles, modiolus
• What is the action of the Orbicularis Oris muscle?

  Closes mouth, compresses and protrudes lips
• What is the origin of the Depressor Anguli Oris muscle?

  Mental tubercle and oblique line of mandible
• What is the function of the Depressor Anguli Oris muscle?

  Depresses angle of mouth
• What is the origin of the Levator Anguli Oris muscle?

  Canine fossa of maxilla
• What is the action of the Levator Anguli Oris muscle?

  Elevates angle of mouth
• What is the origin of the Zygomaticus Major muscle?

  Posterior part of lateral aspect of zygomatic bone
• What is the function of the Zygomaticus Major muscle?

  Elevates and everts angle of mouth
• What is the origin of the Depressor Labii Inferioris muscle?

  Oblique line of mandible
• What is the action of the Depressor Labii Inferioris muscle?

  Depresses lower lip inferolaterally
• What is the origin of the Levator Labii Superioris muscle?

  Zygomatic process of maxilla, maxillary process of zygomatic bone
• What is the action of the Levator Labii Superioris muscle?

  Elevates upper lip, exposes maxillary teeth
• What is the origin of the Zygomaticus Minor muscle?

  Anterior part of lateral aspect of zygomatic bone
• What is the action of the Zygomaticus Minor muscle?

  Elevates upper lip, exposes maxillary teeth
• What is the origin of the Mentalis muscle?

  Incisive fossa of mandible
• What is the action of the Mentalis muscle?

  Elevates, everts and protrudes lower lip, wrinkles skin of chin
• What is the origin of the Buccinator muscle?

  Alveolar process of maxilla, alveolar part of mandible, pterygomandibular raphe
• What is the function of the Buccinator muscle?

  Compresses cheek against molar teeth
• What are the motor branches of the facial nerve?

  • Temporal branches
  • Zygomatic branches
  • Buccal branches
  • Mandibular branches
  • Cervical branches
• What is the role of the trigeminal nerve in the study material?

  It provides the sensory nerve supply to the skin of the face
• What are the three branches of the trigeminal nerve mentioned in the study material?

  • V1: Ophthalmic nerve
  • V2: Maxillary nerve
  • V3: Mandibular nerve
• What is the location of the trigeminal ganglion?

  • Lies inside the cranial cavity