Lab 4: The Axial Skeleton (matt)

Haversian Canal

canals that transports nutrients and remove wastes

Lacunae

small cavities that houses osteocytes

Osteocytes

regulates bone formation and resorption

Concentric lamellae

provides structural support and strength

Canaliculi

channels that transport signals between osteocytes

Trabeculae

provides mechanical strength

Periosteum

connective tissue covering the bone

Endosteum

lines the medullary cavity

Medullary (marrow) cavity

filled with yellow bone marrow

Meatus bone marking

passageway for nerves and blood vessels

Condyle bone marking

provides stability and allows movement

Crest bone marking

attachment point for muscles

Facet bone marking

supports the spine

Head bone marking

ends of a bone that forms part of a joint

Crista galli

serves as an attachment point for membranes surrounding the brain

Cribriform plate

allows the passage of olfactory nerves from the nasal cavity to the brain.

Perpendicular Plate

forms the upper portion of the nasal septum

Olfactory Foramina

allows olfactory nerves to pass through

Occipital Condyle

articulates with atlas to support the skull

Foramen Magnum

allows the spinal cord to join with the brain stem

Optic Foramen

passageway for the optic nerve

Mandibular Fossa

forms the socket for the mandible

Styloid Process

attachment point for muscles involved in oral functions

Mastoid Process

attachment for neck muscle

External Auditory Meatus

gathers sound waves

Condylar Process

attachment of mandible to skull

Infraorbital Foramen

passageway for nerves and veins

Zygomatic

muscle attachment site for facial expressions

Palatine Process

forms hard palate

Palatine

forms posterior part of the hard palate

Vomer

Forms part of the nasal septum

Inferior Nasal Concha

warms inhaled air

Nasal

forms the nasal bridge

Lacrimal

releases fluid to lubricate eyes

Components of the sternum

manubrium, body, xiphoid process

Two functions of the paranasal sinuses

reduce weight of head and sound resonance

What bones form the zygomatic arch?

zygomatic bone and temporal bone