Skeletal System Flashcards
periosteum
outermost layer of the bone, made up of fibrous tissue
compact bone
dense, hard layers of bone tissue that lie underneath the periosteum
cancellous (spongy) bone
contains little spaces like a sponge and is encased in the layers of compact bones
endosteum
membranous lining of the hollow cavity of the bone
diaphysis
shaft of the long bones
epiphysis (pl. epiphyses)
end of each long bone
bone marrow
material found in the cavities of the bones
red marrow
thick, bloodlike material found in flat bones and the ends of long bones; location of blood cell formaiton
yellow marrow
soft, fatty material found in the medullary cavity of long bones
maxilla
upper jaw bone
mandible
lower jaw bone
vertebral column
made up of bones called vertebrae (pl) or vertebra (singular) through which the spinal cord runs. The vertebral column protects the spinal cord
cervical vertebrae (C1 to C7)
first set of seven bones, froming the neck
thoracic vertebrae (T1 to T12)
second set of 12 vertebrae. They articulate with the 12 pair of ribs to form the outward curve of the spin.
lumbar vertebrae (L1 to L5)
third set of five larger vertebrae, which form the inward curve of the spine
sacrum
next five vertebrae, which fuse together to form a triangular bone positioned between the two hip bones
coccyx
four vertebrae fused together to form the tailbone
lamina (pl. laminae)
part of the vertebral arch
clavicle
collarbone
scapula
shoulder blade
acromion process
extension of the scapula, which forms the high point of the shoulder
sternum
breastbone
xiphoid process
lower portion of the sternum
humerus
upper arm bone