Skeletal System Flashcards
What are bones?
They are calcified tissue connected by a series of joins.
There are 206 in an adult skeleton
What are cartilages?
Dense, fibrous tissue that is able to withstand compression forces.
Absorbs impact shock and reduces friction at joints.
Name the 3 main types of cartilage
Hyaline, elastic and fibro
Name the bone in the head
Cranium
Name the bones from the neck to the hips
Clavicle
Scapula
Sternum
Ribs
Spine
Name the bones from the shoulder to the hands
Scapula
Humerus
Radius
Ulna
Carpals
Metacarpals
Phalanges
Name the bones from the hips to the toes
Illium
Pubis
Ischium
Femur
Patella
Tibia
Fibula
Tarsals
Metatarsals
Phalanges
What are the 6 functions of the bones?
Support
Protection
Attachment
Movement
Production
Storage
Explain the support function of the bone
The skeletal bones give the body its basic shape
Explain the protection function of the bone
Axial skeleton - brain protected by cranium, ribs protect heart and lungs
Explain the attachment function of the bone
Ligaments, tendons and muscles attach to bones to create stability and movement
Explain the movement function of the bone
Muscles pull on the long bones to create movement
Explain the production function of the bone
Some bones produce red (carry oxygen) and white (fight infection) blood cells from their marrow
Explain the storage function of the bone
For example, calcium and phosphorus, which support growth and development
What is the axial skeleton?
Provides protection of organs - spine, ribs, sternum and skull
What is the appendicular skeleton?
Allows movement - limbs and anchoring bones that are appendages to the axial skeleton
What are the 5 main types of bones? Give examples of these bones.
Long - femur
Short - carpals
Flat - scapula
Irregular - vertebra
Sesamoid - patella
What part of the bone is the diaphysis?
middle
What part of the bone is the epiphysis?
ends
Name all 8 sections of the bone
Epiphysis
Diaphysis
Articular cartilage
Epiphyseal plate
Cancellous (spongy) bone
Medullary cavity
Periosteum
Compact bone
What type of tissue is the epiphysis made of?
Cancellous (spongy) bone covered by thin layer of compact bone
What is the role of the articular cartilage?
Covers end of bones where joint is formed, allows bones to glide smoothly, can be injured (knee) wear and tear
What is the function of the epiphyseal plate?
Growth plate where growth of long bones takes place, thin layer of cartilage
What is the function of the periosteum?
Allows molecules such as blood to flow out of the bone after production
A membranous tissue that covers the surface of bones
Name 3 minerals that bones are made of
Calcium, phosphorus, sodium and other materials
What does a bone consist of?
Blood vessels, nerves, collagen, living cells
What are osteoblasts?
Build new bone
What are osteoclasts?
Clear existing bone
What are some factors that affect bone growth?
Diet, nutrition, hormones, sunlight, physical activity type and levels, smoking and alcohol, genetics
What is a joint?
Where two or more bones meet or join
What is the function of a joint?
Allow movement of body parts in specific directions