chapter 4 Flashcards
This is the articulation of the two PARIETAL bones in the median plane of the skull?
Sagittal suture
This is the articulation of the parietal bones with FRONTAL bone?
Frontal (coronal) suture
This is the articulation of the parietal cones with the OCCIPITAL bone?
Lambdoid suture
THis is the articulation of the parietal and TEMPORAL bones. There are no ligaments or movements at any of these joints?
Squamous suture
Which of the following cranial sutures separates the occipital and parietal bones?
a) squamous suture
b) Sagittal suture
c) Coronal Suture
d) Lambdoid suture
D) lambdoid suture
What are the bony surfaces on the skull?
1) Mandibular fossa of the temporal bone
2) Head (condyloid process) of the mandible
There is one prominent intraaticular ligament called the?
Articular Disc
This is an oval plate of fibrous tissue that sometimes contains patches of fibrocartilage?
Articular disc
What are the 2 compartments of the temporomandibular joint?
1) The superior compartment
2) Interior compartment
What divides the joint cavity into 2 separate compartments of the TMJ?
articular disc
What is located between the articular disc and the mandibular FOSSA?
The superior compartment
What is located between the articular disc and the MANDIBLE?
Interior compartment
What are the movements of the mandible at the TMJ?
1) Hinge Movement
2) Planar Movement
What are the types of Hinge movements?
1) Depression
2) Elevation
What is the inferior movement of the mandible (open the mouth) called?
Depression
What is the superior movement of mandible called?
Elevation
What are the types of Planar movements?
1) Protraction
2) retraction
3) Lateral movement
What is anterior movement of mandible in a horizontal plane called?
planar movement
What is posterior movement of mandible in a horizontal plane?
Retraction
What is side to side movement (grinding) called?
Lateral movement
How many major unossified membranous areas between the cranial bones?
6
The 6 major unossified membranous areas between the cranial bones are called?
FONTANELLES
What are the types of FONTANELLES?
1) Anterior fontanelle
2) Posterior fontanelle
3) anterolateral (sphenoid fontanelle)
4) Posterolateral (mastoid fontanelle)
This is the LARGEST of the fontanelles located at the junction of the coronal and sagittal sutures. In adults, this lies at the junction of the bregma. What is this?
Anterior Fontanelle
This is a triangle fontanelle located at the junction of the lambdoid and sagittal sutures. In adults, this lies at the location of the lambda
Posterior Fontanelle
These are small irregular fontanelles located at the junction of the frontal, parietal, sphenoid and temporal bones?
Anterolateral (sphenoid) Fontanelle
These are small irregular fontanelles located at the junction of the occipital, parietal and temporal bones?
Posterolateral (mastoid) fontanelle
What are the names of two structures in the adults skull located where the anterior and posterior fontanelles had been?
In the adult skull, the BREGMA is located where the anterior fontanellle had been at birth, and the LAMBDA is located where posterior fontanelle had been
The anterior fontanelle is useful in determining:
1) The position of the fetal head in utero
2) The development of the skull
3) Unlike the other fontanelle becomes bony at 2 years of age
4) in babies this is called the SOFT SPOT
Question 1) Which is not correct?
a) The sagittal suture is the articulation of the two parietal bones in the median plane of the skull
b) The squamous suture is the articulation of the parietal and frontal bones
c) The frontal (coronal) suture is the articulation of the parietal bones with the frontal bone
d) The lambdoid suture is the articulation of the parietal bones with the occipital bone
b) the squamous suture is the articulation of the parietal and frontal bones
Question 2) Which is correct?
a) The coronoid process of the mandible and the mandibular fossa of the parietal bone are the bony surfaces of the temporomandibular joint
b) Depression and elevation are both hinge movements
c) Protraction is side-to-side movement (grinding)
d) The articular disc divides the joint cavity into five separate compartments
b) depression and elevation are both hinge movements
Question 3) Which is not correct?
a) The anterior fontanelle is useful to a physician for checking the development of the skull
b) The anterior fontanelle is the largest of the fontanelles
c) There are only 3 membranous areas between the cranial bones called fontanelles
d) The bones of the fetal skull are not completely ossified after birth
c) There are only 3 membranous areas between the cranial bones called fontanelles
Question 4) Which is correct?
a) Posterolateral fontanelles are small irregular fontanelles located at the junction of the occipital, parietal and temporal bones
b) The posterior fontanelles is located at the junction of the coronal and sagittal sutures
c) The anterior fontanelle is located at the junction of the lambdoid and sagittal sutures
d) Anterolateral fontanelles are small irregular fontanelles located at the junction of the lambdoid and sagittal sutures
a) posterolateral fontanelles are small irregular fontanelles located at the junction of the occipital, parietal and temporal bones
Question 5) Planar movement of the temporomandibular joint include all of the following except:
a) Lateral movement
b) Retraction
c) Depression
d) protraction
c) depression
