Briefly describe the steps in bone deposition

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during bone deposition, osteogenic cells develop into osteoblasts. The osteoblasts secrete collagen fibers and other organic substances to begin formation of matrix. Within the spaces between fibers, calcification occurs to form a solid matrix that eventually surrounds the osteoblast and some extracellular fluid. The osteoblast in its new lacuna is isolated and becomes an osteocyte. The osteocyte continues to secrete matrix but at a lower level.

Anatomy & Physiology

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________ pathways have peripheral primary neurons and central secondary and tertiary neurons

A.   Motor B.   Sensory

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The ________ system regulates blood volume and pressure, stimulates red blood cell formation, and controls fluid, electrolyte, and acid-base balance.

A. muscular B. digestive C. respiratory D. urinary E. circulatory

Anatomy & Physiology

The number of atoms in exactly 12 grams of carbon-12 is called ________ number.

A. Avogadro's B. Socrates's C. Pasteur's D. Dalton's E. Le Chatelier's

Anatomy & Physiology

Which of the following are most active as phagocytes?

A) Eosinophils B) Basophils C) Neutrophils D) Erythrocytes

Anatomy & Physiology