Flashcard: Skull Anatomy and Base Structures — 16 carte

Skull — main bones count?

Eight bones form the skull.

Skull parts — two main sections?

Calvaria (vault) and skull base.

Frontal bone — location?

Anterior, above the orbits, forming the forehead.

Frontal bone — key features?

Glabella, supraorbital ridges, sinuses.

Ethmoid bone — vertical part?

Perpendicular plate and crista galli.

Ethmoid bone — horizontal part?

Cribriform plate with olfactory foramina.

Sphenoid — central bone?

Yes, it forms the skull base and surrounds the sella turcica.

Sphenoid — main parts?

Body, greater wings, lesser wings, pterygoid processes.

Parietal bones — location?

Lateral sides of the skull, forming the vault.

Parietal bones — external features?

Temporal lines, parietal eminence.

Temporal bone — parts?

Squamous, petrous, tympanic parts.

Temporal bone — key features?

Zygomatic process, mastoid, styloid processes.

Occipital bone — main feature?

Foramen magnum, occipital condyles.

Occipital — articulates with?

Atlas (C1 vertebra) via occipital condyles.

Base of skull — bones involved?

Sphenoid, occipital, ethmoid, parts of temporal.

Foramen magnum — function?

Allows passage of spinal cord, connecting to brain.