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PTA- Skeletal Syst
PTA Skeletal System from Lippert
| Question | Answer |
|---|---|
| Name 4 functions of the skeletal system | support, movement, protection, mineral storage, production of blood cells, shape |
| What are the two types of skeletons in the human body? | Axial and Appendicular |
| What human structures are HARDER than human bone? | Dentin and enamel |
| Why is bone considered an organ? | Because it is made up of several different types of tissue |
| Name three types of tissue contained in bone. | Cartilaginous, osseous, nervous, and vascular |
| What proportion of bone is organic? | One third |
| Where do we find compact bone? | Mostly along shafts of long bones and plates of flat bones; it is thin at ends of long bones. |
| Where do we find cancellous bone? | Found in the articular ends of bone. |
| How does compact bone differ from cancellous? | It is harder and denser; cancellous is more porous and spongy and is located under tha harder core. |
| What is the loose, mesh structure of bone filled with? | Marrow |
| Where is the epiphysis located? | At each end of the diaphysis. |
| What is the significance of the epiphyseal plate? | It is the growth center of young bone, where new bone cells are manufactured. It is vulnerable to injury, when subsequent growth can be affected. |
| Name two types of epiphyses. | Pressure and traction. |
| What type of epiphysis grows bone from the stimulation of muscle contraction? | Traction epiphysis |
| What is the function of the medullary canal? | Arteries, which supply nutrients, pass through it. |
| What is the function of the endosteum? | It is where bone resorption occurs. |
| The metaphysis is located between the diaphysis and the epiphysis. What kind of bone do we primarily find here? | Cancellous bone is located here. |
| The periosteum covers bone. What part of bone does it NOT cover? | The articular surface. |
| What category of bones are the humerus, tibia and femus examples of? | Examples of long bones. |
| What category of bones are the sacrum and vertebrae examples of? | Examples of irregular bones. |
| What category of bones are the scapula. patella and ilium examples of? | Examples of flat bones. |
| What category of bones are the carpals and tarsals examples of? | Examples of short bones. |