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By Rich Mursheno Audience: Anyone wanting to learn about the skeletal system.

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Presentation on theme: "By Rich Mursheno Audience: Anyone wanting to learn about the skeletal system."— Presentation transcript:


2 By Rich Mursheno Audience: Anyone wanting to learn about the skeletal system

3 Anatomy- the study of structure Physiology- the study of function

4 *Total of 206 bones *Serves as attachment points for organs and softer body tissues *Protect vital organs *movement is carried out by the interaction of the skeletal and muscular systems *Supports the body *Houses bone marrow tissue (used for blood cell formation) What organs ????

5 Consists of 80 bones Includes skull, rib cage, vertebral column Supports and protects organs Provides framework for muscles that: (1)adjust positions of neck, head, and trunk (2)perform respiratory movements (3) anchor and stabilize the appendicular bones Axial Skeleton

6 *Consists of 126 bones *Makes up the appendages and girdles that attach appendages to the body *pectoral girdle consists of the clavicle and scapula. *pelvic girdle is formed by the two coxal bones which are fused anteriorly Appendicular Skeleton

7 Long Bones *Includes a bone that is longer than it is wide *growth plates (epiphysis) at either end *a hard outer surface of compact bone *a spongy inner known an cancellous bone containing bone marrow *ends of the bone covered in hyaline cartilage to help protect the bone and aid shock absorption

8 HumerusTibiaFemur

9 Short Bones *approximately as wide as they are long *primary function of providing support and stability with little movement *consist of only a thin layer of compact, hard bone with cancellous bone on the inside along with relatively large amounts of bone marrow

10 CarpalsTarsals

11 Flat Bones *strong, flat plates of bone *Function is protection of the bodies vital organs and being a base for muscular attachment *Anterior and posterior surfaces are formed of compact bone to provide strength for protection with the center consisting of cancellous (spongy) bone and varying amounts of bone marrow *In adults, the highest number of red blood cells are formed in flat bones

12 Ribs and Sternum Cranium Scapula

13 Irregular Bones *bones which do not fall into any other category, due to their non-uniform shape *primarily consist of cancellous bone, with a thin outer layer of compact bone *Protect nervous tissue and serve as an anchor for skeletal muscle attachments

14 Sacrum Vertebrae Mandible

15 Sesamoid Bones *usually short or irregular bones *usually present in a tendon where it passes over a joint which serves to protect the tendon *modify pressure, to diminish friction, and occasionally to alter the direction of a muscle pull.

16 Patella Pisiform

17 *The outer layer of a bone is compact bone, which is hard and dense *The next layer is spongy bone, which is like honeycomb, lighter and slightly flexible *The inner layer of some bones, but not all is bone marrow, which is jelly like *Bone marrow is used for blood cell formation

18 *Transverse: This type of fracture occurs when the bone breaks clean across. The break is straight across and through, leaving the bone in two pieces. *Oblique: The oblique fracture occurs when the fracture is a result of a diagonal break completely across the bone. *Greenstick: The greenstick fracture occurs when a broken bone isn’t quite separated. transverse obliquegreenstick

19 *Compression: A compression fracture happens when the bone is crushed and flattened. *Hairline: A thin crack or break in the bone is a hairline fracture, generally associated with stress fractures. *Spiral: A spiral fracture happens when the break twists around the bone. These are more common in injuries where the bone was twisted under pressure. *Impacted: impacted fractures are identified when the fragments of bone are driven into each other.

20 Impacted Compression Hairline Spiral

21 *It is important to eat the right foods to keep healthy bones *Foods that contain calcium such as dairy products can help bone growth and strength *Throughout your life time it is important to exercise *Even with age you must exercise: it can reduce probability for fractures and chances of getting diseases such as osteoporosis

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