Bone Remodeling

Identify three advantages of bone remodeling.

• New osseus tissue is stronger than the old.

• New osseus tissue is redistributed along lines of stress.

• Altered to keep bones strongest where there is greatest need for support.

• Bones store red marrow which house the cells responsible for blood cell formation.

Identify the processes that control bone remodeling.

• Gravitational force

• Mechanical force

• Ossification

• Calcium homeostasis in blood

Tags

NGSS.HS-LS1-3

When there is a higher than normal blood calcium ion level, which hormone is released?

• Calcitonin

• Thyroid

• Parathyroid hormone

• Testosterone

Tags

NGSS.HS-LS1-3

Identify two functions of Calcitonin.

• Stimulates osteocytes

• Inhibits osteoblasts

• Stimulates osteoclasts

• Increases calcification

Lower levels of calcium in the blood stimulates which gland?

Tags

NGSS.HS-LS1-3

Wnen THIS hormone is released, it works to decrease blood calcium ion levels.

• Growth hormone

• Calcitonin

• Parathyroid

• Calcitriol

Tags

NGSS.HS-LS1-3

Which are considered the necessary mineral salts in bone?

• calcium and phosphorus

• calcium and magnesium

• phosphorus and manganese

• calcium, phosphorus, and magnesium

A deficiency of calcitriol (derivitive of vit. D) or calcium can lead to a condition known as

• hematoma

• osteoporosis

• scurvy

• rickets

What role does vitamin C play in bones?

• Stimulates osteoblasts

• Maintains the bone matrix

• Stimulates osteoclasts

• Hardens the bone

Which cell functions in bone breakdown and resorption?