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Skeletal System AP1
| Question | Answer |
|---|---|
| The skull, the vertebral column and thoracic cage, pectoral girdle and upper limbs, and pelvic girdle and lower limbs | skeletal system |
| Function: support, movement, mineral storage, blood cell formation | skeletal system |
| The skeletal system is divided into what 2 sections? | Axial and appendicular skeleton |
| Consists of skull, vertebrae, sternum, ribs, sacrum, and hyoid | axial skeleton |
| Consists of pectoral girdle, upper limbs, pelvic girdle, and lower limbs | appendicular skeleton |
| 80 bones make up this skeletal section | axial skeleton |
| 126 bones make up this skeletal section | appendicular skeleton |
| Total number of bone in adult human body | 206 |
| 2 types of bones | compact and spongy |
| Smooth and homogenous | compact |
| A lot of open space & trabeculae which are bars of bones | spongy bone |
| Have huge blood supply and are mostly made up of compact bone | long bone |
| Usually a long shaft with two heads | long bone |
| Examples: humerus, femor, phalanges | long bone |
| Examples: wrists and ankles | short bones |
| Mostly spongy bone | short bone |
| Compact bone that sandwiches spongy bone (cube shaped) | flat bone |
| Examples: skull, scapula, ribs | flat bones |
| Examples: some facial bones (sphenoid), vertebrae | irregular |
| 4 types of bone | Short, long, irregular, and flat |
| 2 special types of bones | sesamoid and wormian/sutural bones |
| Special types of short bone formed at tendons | sesamoid |
| Tiny bones between cranium bones | wormian/sutural |
| Vary in terms of number; location is different for each individual | special types of bone |
| Depressions and openings | fissure, fontanels, foramen, fossa, meatus, sinus |
| Processes that form joints | condyle, facet, head |
| Attachment processes | crest, epicondyle, linea, process, trochanter, tubercle, tuberosity |