Musculoskeletal Tissues Flashcards
List the five function of the skeleton.
Support, protection, body movement, storage of mineral and fats, blood cell formation.
How many bones are there in the human body?
206
How many bones make up the axial skeleton?
80
How many bones make up the appendicular skeleton?
126
What are the four tissues that make up the skeletal system?
Bones, cartilage, joints, ligaments.
What tissue of the skeletal system contains mineralised matrix of crystalline calcium and calcium carbonate?
Bone
Which component of bone gives flexibility?
Collagen
Why is it advantageous for deers to have antlers with high collagen content?
Collagen is relatively flexible and highly absorbs shock.
Which component of bone makes it hard and brittle?
Hydroxyapatite.
Why do auditory ossicles contain a high amount of hydroxyapatite?
They are used for sound transmission.
What are the four types of cells in bone?
Osteocytes, osteoblasts, osteoprogenitor cells, osteoclasts.
What are osteocytes?
Mature bone cell that maintains the bone matrix.
What are osteoblasts?
Immature bone cells that secrete organic components of the bone matrix.
What are osteoprogenitor cells?
Stem cells whose division produce osteoblasts.
What are osteoclasts?
Multinucleated cells that secrete acids and enzymes to dissolve ECM.
Which cells of the bone are multi-nucleated?
Osteoclasts.
What is the periosteum?
The outer layer of bone
What is the endosteum?
The inner cavity of bone
What are the three major parts of a long bone?
Epiphysis, diaphysis and metaphysis.
What is the diaphysis?
The shaft of the long bone
What is the epiphysis?
Either end of the long bone
What is the metaphysis?
Region between the epiphysis and the diaphysis. It contains the growth plate.
Is cartilage vascularised?
No