Skull - Application

what is the axial skeleton composed of

• bones of the skull

• accessory bones

• vertebral column

• thoracic cage

what is the appendicular skeleton composed of

• upper limbs and pectoral girdle

• lower limbs and pelvic girdle

what is the role of the neurocranium

• surround and protect the brain

• articulates with the vertebral column

what is the viscerocranium

• supports and protects entrances to the digestive and respiratory tracts

how many accessory bones are there

7

what opening where the passage of the spinal cord is

foramen magnum

what articulates with the C1 vertebrae

occipital condyle

what is the definition of a fossa

depression in a bone

what is a foramen

opening in a bone

what is a condyle

rounded prominence of a bone, usually articulation

what is an unpaired bone that forms part of the orbital wall, nasal cavity / septum

ethmoid

what is the crista galli

perpendicular projection of the ethmoid bone

what is an unpaired bone that forms part of the eye orbit and the base of the skull

sphenoid bone

what sits in the sella tucicia

pituitary gland

what is the purpose of skull foramina

allow for passage of important structures such as nerves ad blood vessels

what are sutures

joints between immovable joints

what is the only moveable joint in the skull

temporomandibular joint (TMJ)

what does the temporomandibular joint articulate between

• condylar process (mandible)

• Mandibular fossa (temporal fossa (temporal bone)

what are the ossicles and where are they housed

• three small bones involved in hearing

• housed in the temporal bone

what is the hyoid bone

• “floating bone” located in the neck

• important attachment site for the tongue and muscles involved in swallowing