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12 Cards in this Set
- Front
- Back
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What is the embryonic cartilage primarily composed of?
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hyaline cartilage (elastic)
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When is most of the cartilage replaced?
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When osteoblasts produce bone matrix that covers the cartilage.
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Eventually after the cartilage is digested, what remains?
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Bones with hollow spaces that will become the MEDULLARY CAVITY.
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Which two things remain cartilagenous?
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Articular cartilage and the Epiphyseal plates.
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What happens when bone growth ceases? What happens to the plate.
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The Epiphyseal plates stop producing cartilage as regulated by Human Growth Hormones (HGH). The plate becomes a solid disc.
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What happens when Ca levels drop below normal? (when you NEED Ca)
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Parathyroid release PTH (parathyroid hormones) into the blood.
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What happens when Ca levels are above normal? (when you DON'T need Ca)
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PTH activates OSTEOCLASTS to break apart bone tissue in order to release Ca.
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When is Ca deposited into bone tissue in the form of salt?
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When Ca levels are too high in the blood.
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Osteo =
blasts = Osteoblasts = |
Bone
The making of (the making of bone) |
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What makes up yellow marrow?
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Fat
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What does yellow marrow make?
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red and white blood cells
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What is the production of blood cells?
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hematopoiesis
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