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WorksheetsGroup 4 PE Project
Total questions: 8
Worksheet time: 3mins
What are bones?
Bones are living tissue.
Bones make up our skeleton.
Bones are dead tissue.
True or False? The basic structure of bones is the bone matrix, which consists of compact bone, spongy bone collagen, blood vessels, and nerves.
True
False
True or False? The bone also consists of different tissues, including compact bone, spongy bone, bone marrow, and periosteum.
True
False
There are (a) bones in a baby's skeleton.
There are (a) bones in an adult skeleton.
How do bones grow in length?
Bones grow in length at the epiphyseal plate by a process similar to that of endochondral ossification. The cartilage in the region of the epiphyseal plate next to the epiphysis continues to grow by mitosis.Osteoblasts move in and ossify the matrix to form the bone.
The epiphyses, or epiphyseal plates, are growth centres where new bone cells are produced until the epiphysis closes during late adolescence or early adulthood.
True or False? Bones grow in thickness by apposional growth, where osteoblasts (bone-forming cells) of the outer layer (periosteum) lay down the matrix of bone, which then becomes calcified by hydroxyapatite. Bone is removed from the inner (endosteal) surface by osteoclasts.
True
False
There are four stages in the repair of a broken bone:
1) the formation of hematoma at the break
2) the formation of a fibrocartilaginous callus
3) the formation of a bony callus
4) remodeling and addition of compact bone.
True or False?
Fasle
True
