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Skeletal System Key
Key Terms for the Skeletal System
| Question | Answer |
|---|---|
| Skeletal System | is made of organs called bones |
| Diaphysis | The long shaft of long bone |
| Epiphysis | the extremities,or ends of a bone |
| Medullary Canal | a cavity in the diaphysis |
| Yellow marrow | mainly fat cells |
| Red marrow | found in certain bones such as the vertebrae rib, sternum, humerus, and femur. |
| Periosteum | the outside of bone covered with a tough membrane |
| Axial Skeleton | forms the main trunk of the body and is composed of the skull |
| Appendicular skeleton | forms the extremities and is composed of the shoulder girdle, arms, bones, pelvic girdle, and leg bones. |
| Cranium | the spherical structure that surrounds and protects the brain |
| fontonels | soft spaces of cranium of a new born |
| sultures | areas where the cranial bones have join together |
| sinuses | air spaces in the bones of the skull that act as resonating chambers for the voice |
| foraminar | openings in the bones that allow nerves and blood vessels to enter or leave the bone |
| vertebrae | the spinal column is made of 26 bones |
| ribs | there are 12 pairs of ribs, they attach to the thoracic vertebrae on the dorsal surface of the body |
| sternum | breastbone, the last bone of the axial skeleton |
| clavicles | the shoulder or pectoral, girdle is made of two collarbones |
| scapulas | shoulder bones provides attachment of the upper arm bones |
| humerus | bones of each arm in the upper arm |
| radius | larger bone of lower arm with as projection called the olecranan process at its upper and forming the elbow |
| Carpals | eight in the wrist |
| metacarplas | five in the palm of the hand |
| phalanges | fourteen in fingers and fourteen in the toes |
| os coxae | the pelvic girdle is made of two |
| femur | one in each leg |
| patella | in the kneecap in each leg |
| tibia | in the lower leg in each leg |
| fibula | also in the lower leg in each leg |
| tarsals | seven tarsals in each leg |
| metatarsals | in the instep of the foot in each leg |
| joints | areas where two or more bones join together |
| ligaments | connective tissue bonds |
Created by:
Sergiosaurs
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