Portage Learning: A & P 1, Module 4 Skeletal System

Portage Learning: A & P 1, Module 4 Skeletal System parietal - temporal - frontal - occipital - sphenoid - ethmoid - small unpaired bone, located in the midline of the anterior cranium, between the two orbits. sinus - spaces inside bones purpose of sinuses - reduces weight of skull//provides resonance to voice fontanelle - spaces b/t posterior, anterior, mastoid, & sphenoid (on infants) mastoid - maxilla - mandible - only movable portion of skull nasal - lacrimal - foramen magnum - allows spinal cord to pass through to brain external acoustic meatus - allows hearing cervical vertebrae - C1-C7, small body, large vertebral foramen, straight & narrow spinous process, transverse process & transverse foramen (passage of vertebral arteries) atlas - C1, large vertebral foramen allows for passage of brain stem and spinal cord, no body