Skeletal tissues Flashcards
What are the three types of cartilage?
Yellow elastic cartilage
White fibrous cartilage
Hyaline cartilage
What type of cartilage is the most flexible?
Yellow elastic cartilage
What are the features of cartilage?
Hard, flexible, compressible, elastic, permeable
Which type of cartilage has the highest tensile strength?
White fibrous cartilage
What fibres does yellow elastic cartilage contain?
Elastin
What fibres does white fibrous cartilage contain?
Collagen
What is the function of hyaline cartilage?
Flexible support tissue made of chondrin protein, which is secreted by chondrocytes
What is it called when bones turn from cartilage to bone?
The bones ossify
Where is yellow elastic cartilage found?
Ears and nose
Where is white fibrous cartilage found?
Inter-vertebral disks
Where is hyaline cartilage found?
Coats the bone ends at joint (articular cartilage) and make up the supporting rings in the trachea and bronchi
What is the matrix/chondrin make of?
Glycoproteins
What is the function of the matrix/chondrin?
To reduce friction for bone articulation
What does compact bone do?
Forms a supporting tube to bone shaft and hard layers towards the outside of bone heads
What is the role of organic (squishy) bone and what is it made of?
Resist fracture. Made of collagen
What % of the bone is made up of organic bone?
30%
What % of the bone is made up of inorganic bone?
70%
What is the role of inorganic (brittle) bone and what is it made of?
Resist compression. Made of calcium phosphate and hydroxyapatite
What is the role of the periosteum?
Contain nerves and attaches to ligaments
Where is spongy bone found?
Inside the bone
Where is compact bone found?
Makes up the outer bone structure
What is the role of osteoclasts?
Digest/break down bones
What is the role of osteoblasts?
Deposit/build up bones
What materials do osteocytes exchange with blood vessels?
O2, CO2, glucose, amino acids, urea