As a Long Bone Develops, the Point Where Osteoblasts First

question 158

Short Answer

As a long bone develops, the point where osteoblasts first replace calcified cartilage with spongy bone becomes the ________ center, from which further development proceeds.

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Definitions:

Ediacaran

The geological period approximately 635 to 541 million years ago, preceding the Cambrian, known for its distinct soft-bodied fauna.

Photosynthetic Pigments

Substances produced by plants, algae, and certain bacteria to absorb sunlight and convert it into chemical energy during photosynthesis.

Enzymes

Biological molecules that act as catalysts, speeding up reactions in living organisms without being consumed in the process.

Toxins

Poisonous substances produced by living organisms, often used as defense mechanisms against predators or to incapacitate prey.