#1
Which type of bone cell is responsible for bone formation?
Osteoblast
ExplanationOsteoblasts are bone cells that build new bone tissue by secreting bone matrix.
#2
What is the primary mineral component of bone?
Calcium phosphate
ExplanationCalcium phosphate is the main mineral found in bone, providing strength and rigidity.
#3
Which bone cell is responsible for breaking down bone tissue?
Osteoclast
ExplanationOsteoclasts are cells that resorb or break down bone tissue, allowing for remodeling and repair.
#4
Which hormone regulates calcium levels in the blood and plays a crucial role in bone remodeling?
Parathyroid hormone
ExplanationParathyroid hormone controls calcium homeostasis, influencing bone turnover and blood calcium levels.
#5
What is the process through which old bone tissue is replaced by new bone tissue?
Remodeling
ExplanationRemodeling is the continuous process of replacing old or damaged bone tissue with new bone.
#6
Which hormone inhibits osteoclast activity and promotes bone formation?
Calcitonin
ExplanationCalcitonin regulates calcium levels by inhibiting osteoclasts, promoting bone formation, and preventing excessive resorption.
#7
Which vitamin is essential for calcium absorption and bone health?
Vitamin D
ExplanationVitamin D is crucial for calcium absorption, promoting bone health and preventing deficiencies.
#8
What is the name of the condition characterized by reduced bone mineral density and increased fracture risk?
Osteoporosis
ExplanationOsteoporosis is a condition marked by decreased bone density, leading to increased fracture risk.
#9
Which bone disorder is characterized by softening and weakening of bones due to inadequate mineralization?
Osteomalacia
ExplanationOsteomalacia is a bone disorder marked by softening and weakening due to insufficient mineralization.