Chapter 7 Study Guide

Axial Skeleton

what bones are connected by the coronal suture

frontal and parietal bones 

what is the keystone bone of the cranium

sphenoid bone

what is the keystone bone of the face

maxillary bone

what bones form the hard palate

maxillary and palatine bones

what bones contains the foramen magnum

occipital bone

what bone forms the chin

mandible

what bone contains the paranasal sinuses

ethmoid, frontal, maxillary, and sphenoid bones

what bones form the anterior cranial fossa

temporal bone

what is the function of cranial bones?

enclose and protect the brain and provide attachment sites

what is the function of the facial bones?

framework of the face, form cavities for the sense organs, provide openings for food and air, hold teeth, and anchor muscles of the face

which bones form the nasal conchae?

ethmoid bone

what is the function of the structures that form the nasal conchae?

to create turbulence for the incoming air and to warm, moisten, and filter the air

which of the bones that form the orbit are cranial bones?

frontal, sphenoid, and ethmoid

which of the bones that form the orbit are facial bones?

lacrimal, maxillary, zygomatic, and palatine

which paranasal sinuses are located along the lateral walls of the nasal cavity?

ethmoidal air cells and maxillary

what type of membrane lines all the paranasal sinuses?

mucous membrane

which portion of the intervertebral disc expands under compression?

nucleus pulposus, the inner core of the intervertebral disc

which portion of the intervertebral disc resists twisting forces?

anulus fibrosus, the outer rings of fibrocartilage

when do the secondary curvatures of the vertebral column develop?

cervical curvature develop at 3 months, lumbar curvature develop around 1 year

what does the superior articular process of a vertebra articulate with?

the inferior articular process of the vertebra just superior

name one feature that is unique for all cervical vertebrae

they all have transverse foramina

how can you distinguish thoracic vertebrae T12 from lumbar vertebra L1?

T12 has costal facets on its body; L1 does not

what part of the vertebrae form the median sacral crest?

the fused spinous processes

define the sternal angle 

the junction between the manubrium and the body of the sternum

which rib articulates with the sternum at the sternal angle?

rib 2

what specific features of the thoracic vertebrae articulate with the head of a rib?

the superior and inferior costal facts of thoracic vertebrae

where does the tubercle of a rib articulate?

the transverse costal facet

which skull bones form as two individual bones that fused during childhood into a single bone?

frontal and mandible