Skeletal System
Epiphysis
End of a long bone
compact bone
Hard, dense bone tissue that is beneath the outer membrane of a bone
spongy bone
Layer of bone tissue having many small spaces and found just inside the layer of compact bone.
marrow
The soft connective tissue that fills the internal spaces in bone.
flat bones
These bones are thin, flat, and curved. They form the ribs, breastbone, and skull.
Periosteum
a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.
Hematopoiesis
blood cell formation
Osteoblasts
bone forming cells
endochondral bones
bone that begins as hyaline cartilage that is subsequently replaced by bone tissue
intramembranous bones
broad, flat bones of the skull
medullary cavity
cavity within the shaft of the long bones filled with bone marrow
vertebral column
cervical curvature, thoracic curvature, lumbar curvature, sacrum, coccyx
articular cartilage
covers the surfaces of bones where they come together to form joints
skull (part of axial skeleton)
cranium, face
lower limbs
femur, patella, tibia, fibula, tarsals, metatarsals, phalanges
epiphaseal plate
growth plate
upper limbs
humerus, radius, ulna, carpals, metacarpals, phalanges
hyoid bone (part of the axial skeleton)
hyoid bone, larynx
pelvic girdle
ilium, ischium, pubis
Endoosteum
lining of the medullary cavity
long bones
longer than they are wide
Osteocytes
mature bone cells
bone remodeling
ongoing replacement of old bone tissue by new bone tissue
pectoral girdle
scapula and clavicle
Diaphysis
shaft of a long bone
short bones
shorter than they are wide
Osteon
structural unit of compact bone
trabeculae
supporting bundles of bony fibers in cancellous bone
thoracic cage
thoracic vertebrae, sternum, ribs, costal cartilages, ribs
irregular bones
vertebrae and facial bones
