29 Questions
What happens to the epiphyseal plate as growth in the bone is halted?
It narrows and finally disappears
What is the primary purpose of bone remodelling?
To regulate blood calcium levels
What is the term for a fracture where the skin is pierced?
Compound fracture
What is the first stage of bone healing?
Haematoma formation
What type of fracture occurs when the bone is broken into multiple pieces?
Comminuted fracture
What is the primary function of the osteoid component in bone structure?
Offers flexibility and support to the bone
What is the role of osteoblasts in bone formation?
To produce and secrete osteoid and deposit minerals
What is the main function of the skeletal system?
To provide structural support and protection to internal organs
What is the name of the hardened matrix in bone structure?
Hydroxyapatite
Where are osteogenic stem cells typically found?
In the periostem and endosteum
What is the approximate percentage of osteoblasts in bone mass?
2%
What is the function of osteoclasts in bone remodeling?
To remove mineral from the matrix
What is the main function of compact bone?
To provide strength for weight bearing
What is the characteristic of cancellous bone?
It is light and has a haphazard arrangement of trabeculae
What is the function of red bone marrow?
To produce blood cells
What is the classification of bones based on shape?
Flat, long, short, and irregular bones
What is the process of bone formation called?
Osteogenesis
What is the primary function of osteoclasts in endochondral ossification?
To erode the centre of the diaphysis and create a marrow cavity
What happens to the epiphyseal plate at the end of puberty?
It becomes inactive and disappears
In which type of ossification does a cartilage model lay down first?
Endochondral ossification
What is the outcome of the remodelling process in intramembranous ossification?
Compact bone develops from cancellous bone
What is the role of mesenchymal cells in intramembranous ossification?
They secrete the organic component of bone
What stimulates bone growth during puberty?
Increased levels of sex, growth, and thyroid hormones
What type of joint is characterized by a thin layer of dense irregular connective tissue uniting the bones of the skull?
Suture
What is the term for bones united by a ligament or a sheet of dense irregular connective tissue?
Syndesmosis
What is the term for bones united by hyaline or fibrocartilage?
Cartilaginous joint
What is the term for an immovable joint?
Synarthrosis
What is the term for a slightly movable joint?
Amphiarthrosis
What is the characteristic feature of all synovial joints?
Presence of a fibrous capsule
This quiz covers the functions and structure of bone, including bone formation and healing, the skeleton, joints, and more. Learn about the importance of the skeletal system and its various functions.
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