#1
Which of the following is NOT a function of bone tissue?
Hormone secretion
ExplanationBone tissue does not secrete hormones.
#2
What is the primary mineral component of bone tissue?
Calcium
ExplanationCalcium is the primary mineral in bone tissue, providing its hardness.
#3
Which bone cell type is responsible for bone formation?
Osteoblasts
ExplanationOsteoblasts build bone by secreting new bone matrix.
#4
Which bone cell type is embedded within the bone matrix and maintains bone tissue?
Osteocytes
ExplanationOsteocytes are mature bone cells embedded in the bone matrix, maintaining bone tissue.
#5
Which vitamin is essential for calcium absorption and bone health?
Vitamin D
ExplanationVitamin D facilitates calcium absorption in the intestines and promotes bone mineralization.
#6
What is the name of the fibrous membrane covering the outer surface of bone tissue?
Periosteum
ExplanationPeriosteum is a fibrous membrane covering the outer surface of bones, involved in bone growth and repair.
#7
Which type of bone tissue provides strength and support?
Compact bone
ExplanationCompact bone is dense and provides structural support.
#8
What type of bone tissue is found in the epiphyses of long bones?
Spongy bone
ExplanationSpongy bone is found in the ends of long bones, providing cushioning and flexibility.
#9
Which hormone plays a key role in regulating calcium levels in the blood?
Parathyroid hormone (PTH)
ExplanationPTH increases blood calcium levels by stimulating bone resorption.
#10
What is the name of the process by which bones increase in diameter?
Appositional growth
ExplanationBones increase in diameter through appositional growth.
#11
Where are red bone marrow and yellow bone marrow primarily found in adults?
Red bone marrow in long bones, yellow bone marrow in flat bones
ExplanationRed marrow is found in the cavities of long bones, while yellow marrow is found in the medullary cavities of flat bones.
#12
Which type of bone tissue contains trabeculae and red bone marrow?
Spongy bone
ExplanationSpongy bone contains trabeculae, which provide structural support, and red bone marrow, which produces blood cells.
#13
Which cells are responsible for bone resorption, or the breakdown of bone tissue?
Osteoclasts
ExplanationOsteoclasts break down bone tissue during remodeling.
#14
What is the main component of the organic matrix of bone tissue?
Collagen fibers
ExplanationCollagen fibers provide flexibility and strength to bone tissue.
#15
Which hormone stimulates osteoclast activity and increases blood calcium levels?
Parathyroid hormone (PTH)
ExplanationPTH stimulates osteoclasts to release calcium from bone into the blood.
#16
Which hormone inhibits osteoclast activity and decreases blood calcium levels?
Calcitonin
ExplanationCalcitonin reduces blood calcium levels by inhibiting osteoclast activity.