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021

Musculoskeletal system - Q – Anatomic Terms Related to bones & A – Meaning

QuestionAnswer
appendicular skeleton bones of the shoulder, pelvis, and upper and lower extremities
axial skeleton bones of the skull, vertebral column (Fig. 4-3), chest, and hyoid bone (U-shaped bone at the base of the tongue)
bone specialized connective tissue composed of osteocytes (bone cells); forms the skeleton
compact bone tightly solid bone tissue that forms the exterior of bones
spongy bone mesh-like bone tissue found in the interior of bones, and surrounding the medullary cavity
long bones bones of the arms and legs
short bones bones of the wrist and ankles
flat bones bones of the ribs, shoulder blades, pelvis, and skull
irregular bones bones of the vertebrae and face
sesamoid bones round bones found near joints (e.g., the patella)
Parts of a Long Bone (Fig. 4-4) 0
epiphysis wide ends of a long bone (physis = growth)
diaphysis shaft of a long bone
metaphysis growth zone between the epiphysis and the diaphysis during development of a long bone
endosteum membrane lining the medullary cavity of a bone
medullary cavity cavity within the shaft of the long bones; filled with bone marrow
bone marrow soft connective tissue within the medullary cavity of bones
red bone marrow functions to form red blood cells, some white blood cells, and platelets; found in the cavities of most bones in infantsand in the flat bones in adults
yellow bone marrow gradually replaces red bone marrow in adult bones; functions as storage for fat tissue and is inactive in the formation of blood cells
periosteum a fibrous, vascular membrane that covers the bone
articular cartilage a gristle-like substance on bones where they articulate
Created by: MT student1