170 likes | 311 Views
Bones: An Overview. Essentials of Human Anatomy & Physiology Pages 116 - 118. Functions of the Bones. http://www.quantummetta.co.uk/graphics/260/skeleton.jpg. Support. form internal framework that supports and anchors all soft organs legs support trunk rib cage supports thoracic wall.
E N D
Bones: An Overview Essentials of Human Anatomy & Physiology Pages 116 - 118
Functions of the Bones http://www.quantummetta.co.uk/graphics/260/skeleton.jpg
Support • form internal framework that supports and anchors all soft organs • legs support trunk • rib cage supports thoracic wall http://www.ub.uit.no/baser/arkinord/data/media/378/kalvebakkbru01-med.jpg
Protection • Skull protects brain • Vertebrae protects spinal cord • Rib cage protects vital organs of thorax http://www.biology-blog.com/images/blogs/10-2007/organic-armor-for-dogs.jpg
Movement • Skeletal muscles use the bones as levers to move the body and its parts. http://www.inloughborough.com/cat/images/Martial%20Arts%20Clubs.jpg
Storage • Stores fat in internal cavities. • Stores minerals such as calcium and phosphorus.
Blood Cell Formation • Hematopoiesis occurs within the marrow cavities of certain bones. http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/8636.jpg
Types of Osseous Tissue • Compact Bone • dense • Looks smooth • Homogeneous • Spongy Bone • Composed of small needlelike pieces and lots of open spaces
Compact & Spongy http://media-2.web.britannica.com/eb-media/57/94557-004-CF63D396.jpg
Classification of Bones http://www.diacritic.org/blog/archives/images/calf_bones_1.jpg
Long Bones • Typically longer than they are wide • Have a shaft and heads at both ends • Bones of limbs (except wrist and ankles) • Mostly compact bones
Short Bones • Generally cubed-shaped • mostly spongy bone • Bones of wrist and ankles
Flat Bones • Thin, flattened, usually curved • Two thin layers of compact sandwiching a layer of spongy • Bones of skull, ribs, and sternum
Irregular Bones • Bones that do not fit any of the other categories • Vertebrae and hip bones http://www.arrowvale.worcs.sch.uk/ sportscollege/images/sport/body/irregular.gif http://www.shoppingtrolley.net/images/anatomy/pelvic-girdle.jpg