Flashcards in Lecture 2: Skull And Face Deck (23)
Outline obvious changes in form and appearance of skull associated with growth from birth to adult
Face is grown out
Ossification, no madibular symphoses
How many bones make up the cranium?
How many facial bones are there?
14 facial bones
Inferior nasal concha x2
Name the 4 cranial sutures
What are sutures?
Fibrous joints that have ossified with age
What are the age changes in the cranium as you get older?
Cranial bones become thinner and lighter
Diploe become filled with grey gelatinous material (bone marrow of blood cells and fat)
Obliteration of cranial sutures at about age 30-40 (internal surface)
Age 40-50 on external surface refer to slide 20
What are pneumatized bones?
Bones that contain air spaces to decrease weight
Eg frontal, temporal, sphenoid, ethmoid
Total volume of air spaces increases with age (absent at birth)
What bones make up the anterior fossa?
-sphenoid bone (lesser wing)
-sphenoid (greater wing)
What are the foramina of the cranial base: superior view
Look at slide 30
Name the layers of the scalp
C: connective tissue
L: loose areolar tissue
P: pericardium (periosteum covering outer surface of the skull
What is the diploe layer of the skull?
Spongy, porous, bony tissue between the external (thick/ tough) table and the internal (thin, dense brittle table)
What are the 3 arteries that supply blood to the face?
Superficial temporal artery
What is the sensory innervation of the face and scalp?
Anterior/anterolateral =Trigeminal nerve CNV 5
Posterolateral= anterior rami of spinal nerves
Posterior = posterior rami of spinal nerves
What is the muscle that sits on our forehead?
What is Bell's palsy?
Injury to facial nerve (CN 7)
Paralysis of some or all facial muscles on the affected side
What are the muscles of mastication (4)
What is their blood supply and nerve innovation?
Blood supply: maxillary artery
Motor nerve: mandibular (branch of trigeminal nerve)
What is the junction between the frontal, coronal and sagittal suture called? (Anterior fontalle)
What is the junction between the sagittal and lambdoid sutures (posterior fontalle) called?
Greg and ma
Lamb and he's a da
Craniometric points of the cranium
Name each of them slide 11
Do it or fail again women
Where does the Frankfort horizontal plane lie?
Inferior margin of the orbits and superior region of the external acoustic meatus.
Look at it slide 13
What is it called when the sutures become completely ossified?
Sensory innervation to face and scalp
What are the nerves that branch from CN 5- V1
What are the nerves that branch from CN 5- V2
What are the nerves that branch from CN 5- V3
What are the branches of the facial nerve?
2 zoolus broke my cervix
Motor innervation to face
What comes out of the cribriform plate?
Superior orbital fissure?
What comes out of the cribriform plate? Olfactory nerve bundles
Optic canal? Optic nerve 2, ophthalmic artery
Superior orbital fissure? Oculomotor, trochlear, abducens, ophthalmic V1 and superior ophthalmic vein
Foramen rotundum? Maxillary nerve CN V2
Foramen ovale? Mandibular CNV3, accessory meningeal artery,
Foramen spinosum? Mandibular CNV3 meningeal branch, middle meningeal artery and vein.