Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

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Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Skeletal System Adult has 206 bones Serves as framework for muscles, fat, and skin Protects internal structures Produces blood cells Stores calcium Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

2 Main Parts of the Skeleton Axial Skeleton Contains: Main trunk of body Skull, spinal column, ribs, and sternum Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Appendicular Skeleton Contains: Extremities Shoulder girdle, arm bones, pelvic girdle, and leg bones Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Skull Composed of cranial & facial bones Also contains: Sutures: area where cranial bones are joined Sinuses: air spaces in the skull Foramina: openings in bones that allow for passage of blood vessels & nerves Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Cranial Bones Frontal Parietal (2) Temporal (2) Occipital Ethmoid Sphenoid Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Facial Bones Mandible – lower jaw Maxilla (2) – upper jaw Zygomatic (2) – cheek Nasal (5) – upper part of nose Lacrimal (2) – inner aspect of eye Palatine (2) – hard palate (roof of mouth) Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Vertebrae Cervical (7) – neck Thoracic (12) – chest, attach to ribs Lumbar (5) – waist Sacrum (1) – back of pelvic girdle Coccyx (1) – tailbone Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Ribs (costae) 12 pairs of long slender bones Attach to thoracic vertebrae True ribs – first 7 pairs; attach to sternum False ribs – last 5 pairs Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Sternum AKA: Breastbone Two clavicles attach Ribs attach with cartilage Xyphoid Process: tip of the sternum Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Shoulder or Pectoral Girdle Made up of: 2 clavicles (collarbones) 2 scapula (shoulder bones) Upper arm bones (humerus) attach to scapula Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Bones of the Arm Humerus: upper arm Radius: forearm; thumb side Ulna: forearm; larger bone Carpals: wrist Metacarpals: palm of hand Phalanges: fingers Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Bones of Pelvic Girdle Consists of 2 os coxae: right & left sides (coxal or hip bones) Symphysis pubis Ilium: hip bone Ischium Pubis Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Bones of the Legs Femur: upper leg; largest bone in the body Patella: knee cap Tibia: larger bone of lower leg (shin) Fibula: smaller bone of lower leg Tarsals: ankle Metatarsals: top of the foot Phalanges: toes Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Complete KWL Chart & hand in before class ends STOP Complete KWL Chart & hand in before class ends Begin Muscular System Tomorrow Have a Good Day  Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.

Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Joints Where two or more bones join Ligaments Three types of joints Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.