Soc12 Skeletal System Flashcards
What are the bones in the torso?
Clavicle, sternum, capula, pelvis ribcage
What are the bones in the arm?
Radius, Carpals, Metacarpals, Humerous, Ulna, Phalanges
What are the bones in the leg?
Femus, Tibia, Fibula, Patella, Tarsals, Metatarsals, Phalanges
What are the bones in the spine?
Thoratic, Lumbar, Sacrum, Coccyx, Cervicle
What are the functions of the skeletal system?
Joints for movement, Muscle attachments, Protection of vital organs, Storing calcium and phosphorus, Production of red and white blood cells
Irregular bones
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.
Flat bones
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.
Long bones
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.
Short bones
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.
Pivot joint
Allows bones to rotate example in your neck
Hinge joint
A hinge is a joint that only allows only backward and forward motion example in your knee
Ball and socket joint
In a ball and socket joint, the round head of a long bone fits into a cup shaped hole example in your hip and shoulder
Condyloid joint
A condyloid joint is simular to a ball and socket but the ball rests on the bone
