Head and Neck 4 Flashcards
What is A?

Coronoid process
What is B?

Condyler process
What is C?

Mandibular foramen
What is D?

Angle
What is E?

Mental foramen
What is F?

Mental protrubence
What are the different types of teeth?
Incisor
Canines
Premolars
Molars
How many of each type of deciduous teeth are there?
Incisor 8
Canines 4
Molars 8
How many of each type of permanent teeth are there?
Incisors 8
Canines 4
Premolars 8
Molars 12
What type of joint is the temporomandibular joint (TMJ)?
Hinge (synovial)
What are the 2 articular processes that form the temporomandibular joing?
Mandibular fossa of the temporal bone
Condyler process of the mandible
What movements of the mandible occur at the TMJ?
Elevation (close mouth)
Depression (open mouth)
Protrusion (protude chin)
Retrusion (retrude chin)
Side to side movements (grinding and chewing)
What are the muscles of mastication?
Temporalis
Masseter
Medial pterygoid
Lateral pterygoid
What are the bony attachments of the temporalis muscle?
Temporal fossa
Coronoid process of mandible
How do the fibres of the temporalis differ?
Anterior fibres are nearly vertical
Posterior fibres are nearly horizontal
What happens when the anterior fibres of the temporalis contract?
Elevation
What happens when the posterior fibres of the temporalis contract?
Lateral movement of same side and retrusion
What are the bony attachments of the masseter?
Zygomatic arch
Outer surface of the ramus and coronoid process of the mandible
What are the actions of the masseter?
Elevation (mainly)
Protrusion
Retrusion
Lateral movement
What does the medial pterygoid muscles attach to?
Lateral surface of the lateral pterygoid plate of the skull
What does the medial pterygoid muscle attach to?
Medial surface of the lateral pterygoid plate
To which part of the mandible does the lateral pterygoid muscle attach?
Enters into joint capsule of the TMJ to insert onto neck of mandible and also the articular disc of this joint
To which part of the mandible does the medial pterygoid muscle attach?
Medial surface of ramus and angle of mandible




























