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Transverse section of compact tissue of humerus, magnified about 150 diameters. Three of the Haversian canals are seen, with their concentric rings faintly indicated; also the lacunae, with the canaliculi extending from them across the direction of the encircling lamellae, or concentric rings.

Bone Tissue of Humerus

Transverse section of compact tissue of humerus, magnified about 150 diameters. Three of the Haversian…

The bone contains a multitude of small irregular spaces, approximately fusiform in shape, called lacunae, with very minute canals leading from them and anastomosing with similar little prolongations from the other lacunae. Shown is a longitudinal section from the human ulna, showing Haversian canal, lacunae, and canaliculi.

Microscopic Structure of Bone

The bone contains a multitude of small irregular spaces, approximately fusiform in shape, called lacunae,…

The bone contains a multitude of small irregular spaces, approximately fusiform in shape, called lacunae, with very minute canals leading from them and anastomosing with similar little prolongations from the other lacunae. Shown is a transverse section of compact bony tissue of a humerus. Three of the Haversian canals are seen, with their concentric rings; also the lacunae, with the canaliculi were filled with debris in grinding down the section, and therefore appear black in the figure, which represents the object as viewed with transmitted light. The Haversian systems are so closely packed in this section that scarcely any interstitial lamellae are visible.

Microscopic Structure of Bone

The bone contains a multitude of small irregular spaces, approximately fusiform in shape, called lacunae,…

A small piece of bone, ground very thin and highly magnified. "If a bit of bone is still more magnified we find that very small cavities called lacunae lie between the lamelae; from each lacuna radiate many extremely fine tubes, the canaliculi, so that it looks like a small animal with a great many legs. The innermost canaliculi open into the Haversian canal of the system to which they belong, and those of various lacunae communicate with one another, so that a set of passages is provided through which liquid which transudes from the blood vessel in the Haversian canal can ooze through the bone." —Newell, 1900.

Section of Bone

A small piece of bone, ground very thin and highly magnified. "If a bit of bone is still more magnified…

"Bony Tissue. A, portion of cross-section of a bone, the upper portion of the figure representing the outer surface of the bone, just beneath the periosteum. The open spaces, h, are Haversian canals; l, lacunae, occupied in life by bone cells. The minute canals through the bone connecting the lacunae are canaliculi. B, a portion of one Haversian system much magnified. h, Haversian anal, containing arter (a), vein (v), lymphatic spaces, nutritive cells; c, canaliculi; l, lacunae; la, plae of bone intercellular substance." -Galloway, 1915

Bony Tissue

"Bony Tissue. A, portion of cross-section of a bone, the upper portion of the figure representing the…