O&A Head Flashcards
What does the lateral ligament of the mandible restrict?
Lateral and posterior motion
What results with protrusion of the mandible?
Superior translation of Condyles
What occurs in depression or opening of the mouth?
Rolling of inferior articular cavity
Translation of superior articular cavity
What occurs in lateral deviation of the mandible?
Anterior translation of contralateral side
Slight posterior translation of ipsilateral side
What is the primary movement of the inferior joint cavity of the TMJ joint?
Rotation
What is the primary movement of the superior joint cavity of the TMJ joint?
Translation
What forms the inferior surface of the inferior joint cavity of the TMJ joint?
Condyle
Where are the anterior fontanelle present in infancy?
Between halves of frontal bone and the right and left parietal bones
Neurocranium
Bony case of the brain and its membranous coverings, the cranial meninges (contains nerves and vasculature of the brain)
What makes up the cranium?
Calvaria (skull cap)
Cranial base (floor)
Viscerocranium
Comprises the facial bones and forms anterior part of cranium
What make up the facial aspects of the head?
Orbital cavities
Nasal cavities
Zygomatic arch
Orbital cavities
Consists of the nasal cavities and paranasal sinuses
Nasal cavities
Hollow spaces in the skull around the nose
Zygomatic arch
Formed by the Union of temporal process of zygomatic bone and zygomatic process of the temporal bone
What makes up the lateral aspects of the head?
Temporal fossa
Superior and inferior temporal lines
Zygomatic arch
Infratemporal fossa
Temporomandibular joint
External acoustic meatus
Temporal fossa
Bounded superiorly and posteriorly by the superior and inferior temporal lines
Anteriorly by the frontal and zygomatic bones
Inferiorly by the zygomatic arch
Superior and inferior temporal lines
Bound the temporal fossa
Temporomandibular joint
Joint connecting jaw to skull
External acoustic meatus
Eardrum
What makes up the occipital aspects of the head?
Parietal eminence
Sagittal suture
Lamboid suture
Occipitomastoid suture
Parietomastoid suture
What makes up the superior aspect of the head?
Coronal suture
Bregma
Sagittal suture
Vertex
Lambda
Lamboid suture
What are external on the cranial base?
Foramen magnum
Carotid canal
Foramen magnum
Opening in base of skull where spinal cord and brain connect
Carotid canal
Passageway in temporal bone where carotid artery goes through
What makes up the internal of the cranial base?
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa
Cerebellar fossa
Foramen magnum
What do the anterior, middle, and posterior cranial fossa’s form?
Bowl shaped floor of cranial cavity
What type of joint is the cranial sutures?
Fibrous
What type of joint is the TMJ joint?
Synovial hinge
What are articular surfaces of TMJ joints?
Mandibular fossa
Articular tubercle of temporal bone and head of mandible
What type of capsule does the TMJ have?
Fibrous
What are ligaments associated with the TMJ joint?
Lateral ligament
Stylomandibular ligament
Sphenomandibular ligament
