Chapter 6 Bones And Skeletal Tissues Flashcards
(28 cards)
Hyaline Cartilage
provides support, flexibility and reduces friction
Hyaline Cartilage locations
Nose, Trachea, Larynx and at the ends of long bones
Fibrocartilage
tough and acts as a shock absorber
Fibrocartilage location
intervertebral discs and pubic symphysis
Elastic Cartilage
Elastic and maintains shape while allowing flexibility
Elastic cartilage location
external ear and epiglottis
Cartilage Growth
primarily through interstitial and appositional growth
interstitial growth
chondrocytes within cartilage matrix divide and produce new matrix
Appositional Growth
involves the addition of new cartilage tissue. where chondroblasts in the surrounding perichondrium lay down new matrix
Bony skeleton
Provide structural support, protection for vital organs, facilitates movement, serves as mineral reservoir
Bone Tissue
provides rigidity, support, and protection for internal organs. Plays crucial role in mineral storage
osteoblasts
build bone tissue by secreting matrix components
(immature)
Osteocytes
mature bone cells embedded in the matrix, involved in maintenance and repair
Osteoclasts
responsible for bone resorption, breaking down bone tissue
Long Bone (e.g femur)
Has a shaft (diaphysis) and two ends (epiphysis)
Long bone contains
medullary cavity, periosteum and endosteum
Flat Bone (e.g Scapula)
consists of two compact bone layers with spongy bone in between (sandwich)
Flat bone contains
external and internal surfaces, periosteum, and endosteum
Compact Bone
dense and forms the outer layer of bones
Compact bone composed of
osteons (Haversian system) containing concentric lamellae
Spongy Bone
Less dense and found in interior of bones
Spongy bones composed of
trabeculae with spaces filled with red bone marrow
Intramembranous ossification occurs in
flat bones
intramembranous ossification develop
bone develops from mesenchymal tissue directly, without a cartilage intermediate