Skeletal system Flashcards
Classification of bones
long bones
Short bones
Flat bones
Irregular bones
Sesamoid bones
Long bones
allow movement, support and red blood cell production
E.g. femur, humerus, tibia, radius, ulna
Short bones
fine or small movements, shock absorption, stability and weight bearing
E.g. carpels, tarsels
Flat bones
attached for muscles and protection
E.g. sternum, scapular, pelvis and cranium
Irregular bones
protection, movement and spinal cord
E.g. vertebrae
Sesamoid bones
protection and reduction of friction across a joint
E.g. patella and wrist
Neutral spine
S shape
Good posture
Verticals view from front
Kyphosis
Excessive outward curvature in the thoracic region
Causes bad posture
Scoliosis
Abnormal curvature to left or right in the thoracic region
Found in children
Osteoclats
where the bone breaks down
Osteoblasts
which is the building of the bone
Functions of skeleton
Protection
Storage of minerals
Leverage
Weight bearing
Fixed joint (fibrous)
immovable joints that interlock or overlap during early childhood, held together with fibrous strong tissue
Slightly moveable (cartilaginous)
allow slight movement, end of bones are smooth and shiny covering, reduces friction between the bones
Moveable (synovial)
freely moveable joints, vital to all sporting movements, always have a synovial cavity or space between the bones, joint fluid lubricates the joint
