Soc 12- Skeletal System Flashcards
What are the 5 functions of the skeletal system
Protection of vital organs Muscle attachment Joints for movement Storing calcium and phosphorus Red and white blood cell production
what are the bones in the torso (5)
Clavicle Sternum Scapula Pelvis Rib
What bones are in the arms (6)
Radius Ulna Humerus Carpals Metacarpals Phalanges
What bones are in the legs (7)
Femur Patella Tarsals Metatarsals Phalanges Tibia Fibula
What bones are in the spine (5)
Thoracic Lumbar Sacrum Coccyx Cervical
What is a long bone
Long bones are longer than they are wide.They don’t have to
be big, small bones like finger bones (phalanges) count as long
bones. A long bone has a shaft and two ends,
These bones are vital to generate movement, strength and
speed. They usually act as levers. When they are pulled by
different muscles, they enable the body to move.
What is a short bone
Short bones are generally the same size in length, width and
thickness. The only short bones in the body are the carpals
(cuffs) in the wrist and the tarsals (toes) in the foot.
Short bones are usually associated with weight baring, shock
absorption and spreading loads. They play a key role in activities
like jogging, playing tennis or dancing.
What is a flat bone
Flat bones usually protect organs or offer a good surface for
muscles to attach to. For example, the ribs protect the heart
and lungs, while the broad scapula has three muscles attached
to it. Other flat bones are; scapula, cranium and clavicle,
Flat bones protect your organs in contact sports and provide
attachment for muscles to help movement
What is a irregular bone
Irregular bones have odd shapes and vary in function. An
example is the vertebrae which help protects the spinal column
and the sacrum which has lots of attachment points.
Irregular bones offer protection when playing sport, they tend
to form specific functions for example the first and second
vertebrae allow the head to turn and nod,
