#1
What is the primary function of bone tissue?
Support and protection
ExplanationProvides structural support and protection to vital organs.
#2
What is the function of synovial fluid in joints?
Prevents friction between bones
ExplanationLubricates joints, reducing friction and wear.
#3
Which type of joint allows for the greatest range of motion?
Ball-and-socket joint
ExplanationOffers extensive movement in multiple directions.
#4
In which part of the long bone is red bone marrow typically found?
Epiphysis
ExplanationEnd portion of a long bone where red marrow resides.
#5
Which of the following is a function of the skeletal system?
Movement
ExplanationEnables body movement and locomotion.
#6
Which type of cells are responsible for bone formation?
Osteoblasts
ExplanationCells that build and repair bone tissue.
#7
What is the mineral primarily found in bone tissue that contributes to its hardness?
Calcium
ExplanationCritical mineral for bone strength and hardness.
#8
Which hormone plays a crucial role in regulating calcium levels in the blood and bone remodeling?
Parathyroid hormone (PTH)
ExplanationRegulates calcium levels and bone remodeling.
#9
What is the Haversian system or osteon in bone tissue?
Microscopic structural unit
ExplanationBasic structural unit responsible for bone strength.
#10
What is the name of the connective tissue covering the surface of bones at joints?
Synovium
ExplanationThin membrane covering bone surfaces at joints.
#11
Which bone disorder is characterized by a reduction in bone density, making bones fragile and more susceptible to fractures?
Osteoporosis
ExplanationCondition causing brittle bones due to loss of density.
#12
What is the function of red bone marrow?
Blood cell formation
ExplanationSite where blood cells, including red blood cells, are produced.
#13
Which vitamin is essential for the absorption of calcium in the intestines, promoting bone health?
Vitamin D
ExplanationFacilitates calcium absorption and bone mineralization.
#14
What is the function of yellow bone marrow?
Fat storage
ExplanationStores fat and serves as an energy reserve.
#15
Which term refers to the gradual loss of joint cartilage leading to pain and stiffness in the affected joint?
Osteoarthritis
ExplanationDegenerative joint disease causing cartilage breakdown.