Anatomy of a Long Bone

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Quiz on Long Bone

Epiphysis

The end of a long bone. Externally has a thin layer of compact bone, while internally the bone is cancellous (spongy). Capped with articular cartilage.

epiphysial line

fully ossified growth plate.

Diaphysis

Shaft of the long bone. It has compact bone with a central cavity.

Articular cartilage

Found on the end of long bones. Smooth, slippery, and bloodless.

Periosteum

Fibrous, vascular, sensitive life support covering for bone. Provides nutrient-rich blood for cells and a source of bone-developing cells during growth or after a fracture.

Cancellous (Spongy) bone

Appear as tiny beams of bone arranged like a lattice. Red marrow packs the spaces between the beams.

Marrow

Packs the spaces between the beams of spongy bone.

Compact bone

Dense bone found in diaphysis. Repeated pattern is arranged in concentric layers of solid bone.

Medullary cavity/Yellow Marrow

Cavity of diaphysis that serves to lighten bone weight and provides space for its marrow.

Nutrient artery

Contained in each long bone, tunnel in shaft for the passage of artery, that supplies the shaft.

medullary cavity of adult bone

Where Yellow Marrow is found

compact bone

Type of bone arranged in concentric layers.

medullary cavity of children/teens/infant

where red marrow is found

epiphysis

End of bone

cancellous

spongy bone is also called _______

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