W19-L4: Skull and Cranial Cavity Flashcards Preview

Matt's Block 06 - Neuro block > W19-L4: Skull and Cranial Cavity > Flashcards

Flashcards in W19-L4: Skull and Cranial Cavity Deck (16):
1

Diploe

Spongey bit of bone in between the two layers of compact bone that make up the skull

2

Coronal Suture

Separates Frontal bone from the left and right parietal bones

3

Bregma fontalle

Where Coronal suture meets sagittal suture

4

Sagittal Suture

Separates Left and Right Parietal bones

5

Lambda Fontalle

Where Sagittal suture meets lambdoid suture

6

Lambdoid suture

Separates Occipital bones from left and right parietal bones

7

Pterion

H shaped suture between the frontal, parietal, temporal and sphenoid bones

8

Features of Frontal Bone

Two parts vertical and horizontal which is demarcated by the supra-orbital margin

9

Features of Parietal bone

flat and molded to the shape of the brain, meets at the sagittal suture

10

Features of the occipital bone

flat, molded to the posterior of the brain, has a prominent bump called external occipital protuberance

11

Features of Temporal bone

Sqamous part is flat and contoured to lateral brain , has a series of projections

12

Projections of the temporal bone

Zygomatic process to zygomatic bone, posteriorly mastoid process (sternocleidomastoid attaches here), sharp inferior projection is styloid process which gives attachment for muscles of pharynx and oral cavity and inwards wedge shape which forms part of cranial floor called petrous

13

Features of Sphenoid bone

Superior orbital fissure separates lesser wing from greater wing

14

Anterior Cranial Fossa

Cribiform plate (olfactory nerve)

15

Middle Cranial Fossa

-Hypophysial fossa (pituitary gland)
-Optic canal (optic nerve, opthalamic artery)
-Superior orbital fissure (nerves to extraocular muscles and branches of trigeminal nerve)
-Foramen rotundum (maxillary nerve)
-Foramen ovale (mandibular nerve)
-Foramen spinosum (middle meningeal artery)

16

Posterior Cranial Fossa

-Internal acoustic meatus (CN VII and VIII)
-Jugular foramen (IX, X, XI, internal jugular vein)
-Hypoglossal canal (hypoglossal nerve)
-Foramen magnum

Decks in Matt's Block 06 - Neuro block Class (48):