#1
Which type of bone is primarily found in the limbs?
Long bone
ExplanationLong bones primarily support movement and are found in the limbs.
#2
Where can osteocytes be found?
In the bone matrix
ExplanationOsteocytes are embedded within the bone matrix, contributing to its maintenance.
#3
Which cell type is responsible for bone resorption?
Osteoclast
ExplanationOsteoclasts break down bone tissue during the remodeling process.
#4
What is the function of trabeculae in spongy bone?
To provide strength and support
ExplanationTrabeculae provide structural support and help distribute forces within spongy bone.
#5
What is the primary component of the organic matrix of bone tissue?
Collagen
ExplanationCollagen provides the framework for bone tissue, contributing to its strength and flexibility.
#6
Which bone cell is responsible for synthesizing and secreting the organic components of the bone matrix?
Osteoblast
ExplanationOsteoblasts produce and deposit the organic matrix of bone tissue.
#7
Which type of bone tissue forms the outer layer of all bones and is responsible for bone growth in diameter?
Compact bone
ExplanationCompact bone forms the outer layer of bones and provides strength and protection.
#8
Which hormone plays a key role in regulating bone remodeling by stimulating osteoclast activity?
Parathyroid hormone (PTH)
ExplanationPTH stimulates osteoclasts to release calcium from bone into the bloodstream.
#9
What is the structural unit of compact bone?
Osteon
ExplanationOsteons are the basic structural units of compact bone, composed of concentric layers.
#10
Which vitamin is essential for the absorption and metabolism of calcium and phosphate, crucial for bone health?
Vitamin D
ExplanationVitamin D facilitates the absorption of calcium and phosphate, vital for bone mineralization.
#11
Which bone cell type is responsible for maintaining the bone matrix?
Osteocyte
ExplanationOsteocytes maintain the bone matrix and participate in the exchange of nutrients and waste.
#12
What is the primary function of the Haversian canals?
To provide a pathway for nerves and blood vessels
ExplanationHaversian canals contain nerves and blood vessels, providing a conduit for their passage through compact bone.