PT 6816 Chapter 4: Joints of the Skull

Sagittal

The ______________ suture is the articulation of the two parietal bones in the median plane of the skull.

Frontal (coronal)

The ________________ suture is the articulation of the parietal bones with the frontal bone.

Condyloid process

The head of the mandible is also called:

Anterior fontanelle (1), posterior fontanelle (1), anterolateral fontanelles (sphenoid fontanelles, 2) posterolateral fontanelles (mastoid fontanelles, 2)

6 fontanelles include:

Soft spot

Anterior fontanelle is called the "_________________" in babies

Sphenoid fontanelles

Anterolateral fontanelles are also known as:

Unossified, membranous

Fetal skull: 6 major _________________ areas between the cranial bones are called fontanelles (from French fontanelle = a little fountain).

Cranial bones

Fetal skull: 6 major unossified, membranous areas between the ____________ are called fontanelles (from French fontanelle = a little fountain).

Fontanelles

Fetal skull: 6 major unossified, membranous areas between the cranial bones are called _______________

6

Fetal skull: ______________ major unossified, membranous areas between the cranial bones are called fontanelles (from French fontanelle = a little fountain).

Small irregular

Fontanelles: Anterolateral fontanelles (sphenoid fontanelles) are _______________ fontanelles located at the junction of the frontal, parietal, sphenoid, and temporal bones.

Frontal, parietal, sphenoid, and temporal bones

Fontanelles: Anterolateral fontanelles (sphenoid fontanelles) are small irregular fontanelles located at the junction of the ________________.

Small irregular

Fontanelles: Posterolateral fontanelles (mastoid fontanelles) are _______________ fontanelles located at the junction of the occipital, parietal, and temporal bones.

Occipital, parietal, and temporal bones

Fontanelles: Posterolateral fontanelles (mastoid fontanelles) are small irregular fontanelles located at the junction of the ___________________.

Triangular

Fontanelles: The _____________ (shape) posterior fontanelle is located at the junction of the lambdoid and sagittal sutures. In adults, this lies at the location of the lambda.

Anterior fontanelle

Fontanelles: The _________________ is the largest of the fontanelles located at the junction of the coronal and sagittal sutures. In adults, this lies at the location of the bregma.

Largest

Fontanelles: The anterior fontanelle is the ____________ of the fontanelles located at the junction of the coronal and sagittal sutures. In adults, this lies at the location of the bregma.

Coronal and sagittal sutures

Fontanelles: The anterior fontanelle is the largest of the fontanelles located at the junction of the _____________. In adults, this lies at the location of the bregma.

Bregma

Fontanelles: The anterior fontanelle is the largest of the fontanelles located at the junction of the coronal and sagittal sutures. In adults, this lies at the location of the ______________.

Posterior fontanelle

Fontanelles: The triangular ___________________ is located at the junction of the lambdoid and sagittal sutures. In adults, this lies at the location of the lambda.

Lambdoid and sagittal sutures

Fontanelles: The triangular posterior fontanelle is located at the junction of the ________________. In adults, this lies at the location of the lambda.

Lambda

Fontanelles: The triangular posterior fontanelle is located at the junction of the lambdoid and sagittal sutures. In adults, this lies at the location of the ______________.

Anterolateral fontanelles (sphenoid fontanelles)

Fontanelles: ____________________ are small irregular fontanelles located at the junction of the frontal, parietal, sphenoid, and temporal bones.

Posterolateral fontanelles (mastoid fontanelles)

Fontanelles: _____________________ are small irregular fontanelles located at the junction of the occipital, parietal, and temporal bones.

Fontanelle

From French _____________ = a little fountain

A little fountain

From French fontanelle = ________________

Coronal suture

Frontal suture is also known as:

Inferior, open

Movements of the mandible at the temporomandibular joint: Hinge movements: -Depression is ____________ movement of the mandible (___________ the mouth)

Superior, close

Movements of the mandible at the temporomandibular joint: Hinge movements: -Elevation is _____________ movement of the mandible (___________ the mouth)

Depression

Movements of the mandible at the temporomandibular joint: Hinge movements: -__________________ is inferior movement of the mandible (open the mouth)

Elevation

Movements of the mandible at the temporomandibular joint: Hinge movements: -_____________________ is superior movement of the mandible (close the mouth)

Depression, elevation

Movements of the mandible at the temporomandibular joint: Hinge movements: ___________________

Side-to-side movement (grinding)

Movements of the mandible at the temporomandibular joint: Planar movements: -Lateral movement is ___________________.

Anterior, horizontal

Movements of the mandible at the temporomandibular joint: Planar movements: -Protraction is ___________ movement of the mandible in a ______________ plane.

Posterior, horizontal

Movements of the mandible at the temporomandibular joint: Planar movements: -Retraction is _______________ movement of the mandible in a _________________ plane.

Protraction

Movements of the mandible at the temporomandibular joint: Planar movements: -_________________ is anterior movement of the mandible in a horizontal plane.

Retraction

Movements of the mandible at the temporomandibular joint: Planar movements: -____________________ is posterior movement of the mandible in a horizontal plane.

Lateral movement

Movements of the mandible at the temporomandibular joint: Planar movements: -____________________ is side-to-side movement (grinding).

Protraction, retraction, lateral movement

Movements of the mandible at the temporomandibular joint: Planar movements: ___________________

Hinge

Movements of the mandible at the temporomandibular joint: _________________ movements: -Depression -Elevation

Planar

Movements of the mandible at the temporomandibular joint: _________________ movements: -Protraction -Retraction -Lateral movement

Hinge, planar

Movements of the mandible at the temporomandibular joint: (2 general ones)

Mastoid fontanelles

Posterolateral fontanelles are also known as:

Sagittal suture, frontal (coronal) suture, lambdoid suture, squamous suture

Sutures: Bony surfaces: _________________

Suture

Sutures: Classification: Fibrous joints, _____________ in type.

Fibrous

Sutures: Classification: ________________ joints, suture in type.

Ligaments, movements

Sutures: There are no _______________ or ______________ at these joints.

Circumference

Temporomandibular joint: Articular disc (intraarticular ligament): -The ______________ of the disc attaches to the articular capsule.

Two

Temporomandibular joint: Articular disc (intraarticular ligament): -The articular disc divides the joint cavity into _________ separate compartments.

Superior

Temporomandibular joint: Articular disc (intraarticular ligament): -The articular disc divides the joint cavity into two separate compartments. **The ___________ compartment is located between the articular disc and the mandibular fossa.

Inferior

Temporomandibular joint: Articular disc (intraarticular ligament): -The articular disc divides the joint cavity into two separate compartments. **The _____________ compartment is located between the articular disc and the mandible (condyloid process).

Articular disc, mandible (condyloid process)

Temporomandibular joint: Articular disc (intraarticular ligament): -The articular disc divides the joint cavity into two separate compartments. **The inferior compartment is located between the _______________ and the ____________.

Articular disc, mandibular fossa

Temporomandibular joint: Articular disc (intraarticular ligament): -The articular disc divides the joint cavity into two separate compartments. **The superior compartment is located between the ____________ and the _____________.

Articular capsule

Temporomandibular joint: Articular disc (intraarticular ligament): -The circumference of the disc attaches to the _____________.

Oval

Temporomandibular joint: Articular disc: (intraarticular ligament) -It is an ___________ plate of fibrous tissue that sometimes contains patches of fibrocartilage.

Fibrous tissue, fibrocartilage

Temporomandibular joint: Articular disc: (intraarticular ligament) -It is an oval plate of _____________ that sometimes contains patches of _____________.

Mandibular fossa of the temporal bone, head (condyloid process) of the mandible

Temporomandibular joint: Bony surfaces: ___________________

Synovial, combined hinge and plane

Temporomandibular joint: Classification: _________________ joint, _________________ in type.

Intraarticular

Temporomandibular joint: Ligaments: -There is one prominent ________________ ligament called the articular disc.

Articular disc

Temporomandibular joint: Ligaments: -There is one prominent intraarticular ligament called the _________________.

Articular disc

Temporomandibular joint: _______________: (intraarticular ligament) -It is an oval plate of fibrous tissue that sometimes contains patches of fibrocartilage. -The circumference of this attaches to the articular capsule. -This divides the joint cavity into two separate compartments. **The superior compartment is located between this and the mandibular fossa. **The inferior compartment is located between this and the mandible (condyloid process).

Bones

The _____________ of the fetal skull are not completely ossified at birth.

Squamous

The ______________ suture is the articulation of the parietal and temporal bones.

Anterior

The _______________ fontanelle is useful to the physician in determining the following: -The position of the fetal head in utero -The development of the skull **Unlike the other fontanelles, which ossify within a few months, this fontanelle becomes bony at 2 years of age. **In babies, this is called the "soft spot." -The extent of pathological intracranial pressure

Lambdoid

The ________________ suture is the articulation of the parietal bones with the occipital bone.

Position of the fetal head in utero, development of the skull, extent of pathological intracranial pressure

The anterior fontanelle is useful to the physician in determining the following:

Fetal skull

The bones of the _______________ are not completely ossified at birth.

Parietal bones, frontal bone

The frontal (coronal) suture is the articulation of the _______________ with the _____________.

Parietal bones, occipital bone

The lambdoid suture is the articulation of the ______________ with the ______________.

Two parietal bones

The sagittal suture is the articulation of the _______________ in the median plane of the skull.

Median

The sagittal suture is the articulation of the two parietal bones in the ___________ plane of the skull.

Parietal and temporal bones

The squamous suture is the articulation of the ________________.

Sutures

There are no ligaments or movements at these joints

Anterior

Which fontanelle becomes bony at 2 years of age and is called the "soft spot" in babies?

Temporomandibular joint

_________________________: Classification: Synovial joint, combined hinge and plane in type Bony surfaces: -Mandibular fossa of the temporal bone -Head (condyloid process) of the mandible Ligaments: -There is one prominent intraarticular ligament called the articular disc.