Skull Flashcards
Name the 4 sutures of the skull
Metopic
Coronal
Parietal
Lambdoid
What type of joint is the AA?
Synovial pivot joint
What type of joint is the AO?
Synovial condyloid
What degree of movement is available at the AO joint?
Flexion 10
Extension 5
What type of joint are the cranial sutures?
Fibrous
What type of joint is the spheno-basilar symphysis.
Describe the articulation between these bones
Synchondrosis
Sphenoid and the basilar part of the occipital
Name the 4 movements of the TMJ
Protrusion
Retraction
Elevation
Depression
What type of joint is the TMJ
Bicondylar ellipsoid joint with fibrocartilagneous articular disc
Describe the articulations of the TMJ
the mandibular fossa and articular tubercle (from the temporal bone), and the head of mandible.
Which nerve innervates the muscles of mastication?
Mandibular branch of the trigmeninal nerve
Cranial nerve 5
Which bones house the ear?
Temporal bones
Which cranial nerve is responsible for hearing and balance?
Vestibulocochlear nerve
Cranial nerve 8
Which bones make up the orbit of the eye? (7)
Zygomatic Maxillary Frontal Lacrimal Sphenoid Ethmoid Palantine
The mental foramen of the mandible acts as a passageway for which nerve? What does it innervate
Alveolar nerve
Supplies sensation to the lower teeth
Which cranial nerve innervates the extrinsic and intrinsic muscles of the tongue?
Hypoglossal nerve
Cranial nerve 12
Which muscles attaches to the styloid process of the temporal bone?
styloglossus muscle
Which nerve innervates the sub occipital muscles?
Compression of this nerve may lead to which conditon?
C1, Arnolds neuralgia
Which sub occipital muscles attaches to the Posterior tubercle of the atlas?
Rectus capitus posterior minor
Which sub occipital muscles attaches to the SP of the axis?
Rectus capitus posterior major
What is the origin and insertion of the obliquus capitis inferior?
O- SP of the axis?
I- Transverse process of the axis
What is the origin and insertion of the obliquus capitis Superior?
O- Tp of the axis
I- Superior nuchal line of the occipital
Which suboccipital muscle laterally flexes the head?
obliquus capitis Superior?
Which suboccipital muscle rotates the head/neck? (2)
obliquus capitis inferior
Rectus capitus posterior major
What is the function of Rectus capitus posterior minor muscle?
Extends the head
Which muscle opens/closes the eye?
Levator palpabrae superioris (opens) Orbicularis oculi (closes)
Which nerve inneravates the Levator palpabrae superioris?
Cranial nerve 3
oculomotor nerve
What nerve innerates the lateral rectus of the eye?
Cranial nerve 6
The abducens nerve
Which nerve inneravates the superior oblique muscle of the eye?
trochlear nerve
Cranial nerve 3
What are the accessory movements of the AO joint?
Ant/Post translation
Which muscle depress the mandible?
platysma
