#1
Which mineral primarily contributes to the hardness of bones?
Calcium
ExplanationCalcium contributes to bone hardness.
#2
What type of cells are responsible for bone formation?
Osteoblasts
ExplanationOsteoblasts form bones.
#3
Which vitamin is essential for the absorption of calcium in the body?
Vitamin D
ExplanationVitamin D facilitates calcium absorption.
#4
What is the name of the condition characterized by weak and brittle bones?
Osteoporosis
ExplanationOsteoporosis results in weak and brittle bones.
#5
What is the name of the process by which bone tissue is regenerated after injury?
Bone remodeling
ExplanationBone remodeling regenerates bone tissue after injury.
#6
What is the outer covering of bones called?
Periosteum
ExplanationPeriosteum covers bones.
#7
Which hormone plays a crucial role in regulating bone growth and maintenance?
Parathyroid hormone (PTH)
ExplanationParathyroid hormone regulates bone growth and maintenance.
#8
Which bone in the human body is the longest?
Femur
ExplanationThe femur is the longest bone in the human body.
#9
What is the process by which bones are formed in the embryo?
Intramembranous ossification
ExplanationBones form through intramembranous ossification in the embryo.
#10
What is the medical term for the growth plate in bones?
Epiphyseal plate
ExplanationThe growth plate in bones is called the epiphyseal plate.
#11
What is the process by which bone tissue is broken down?
Osteolysis
ExplanationOsteolysis is the breakdown of bone tissue.
#12
Which of the following is not a function of the skeletal system?
Hormone secretion
ExplanationHormone secretion is not a function of the skeletal system.
#13
Which hormone is responsible for inhibiting bone resorption?
Calcitonin
ExplanationCalcitonin inhibits bone resorption.
#14
What is the process by which bone tissue adapts to mechanical stress?
Wolff's Law
ExplanationWolff's Law describes bone adaptation to mechanical stress.
#15
Which bone is located in the forearm and is positioned on the side of the thumb?
Radius
ExplanationThe radius is located in the forearm, positioned on the side of the thumb.