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The Skeletal System An Introduction to BONES

The Skeletal System An Introduction to BONES. HUMAN ANATOMY HEALTH Grade 7. FUNCTIONS. 206 bones form a rigid framework to which the softer tissues and organs of the body are attached. Vital organs are protected by the skeletal system.

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The Skeletal System An Introduction to BONES

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  1. The Skeletal SystemAn Introduction to BONES HUMAN ANATOMY HEALTH Grade 7

  2. FUNCTIONS • 206 bones form a rigid framework to which the softer tissues and organs of the body are attached. • Vital organs are protected by the skeletal system. • The brain is protected by the surrounding skull as the heart and lungs are encased by the sternum and rib cage.

  3. Musculo-Skeletal system • Bodily movement is carried out by the interaction of the muscular and skeletal systems. • Muscles are connected to bones by tendons. • Bones are connected to each other by ligaments. • Where bones meet one another is typically called a joint.

  4. Divisions of the SkeletonAXIAL SKELETON • Consists of bones that form the axis of the body and support and protect the organs of the head, neck, and trunk. • AXIAL Skeleton • The skull is the bony framework of the head. • The sternum is a flat, dagger shaped bone located in the middle of the chest.

  5. Divisions of the SkeletonAXIAL SKELETON

  6. Divisions of the SkeletonAXIAL SKELETON • The ribs are thin, flat, curved bones that form a protective cage around the organs in the upper body. • The vertebral column (also called the backbone, spine, or spinal column) consists of a series of 33 irregularly shaped bones, called vertebrae.

  7. Divisions of the SkeletonAXIAL SKELETON

  8. Divisions of the SkeletonAPPENDICULAR SKELETON • Is composed of bones that anchor the appendages to the axial skeleton. • APPENDICULAR Skeleton • The upper extremity consists of three parts: the arm, the forearm, and the hand. • The lower extremity is composed of the bones of the thigh, leg, foot, and the patella (commonly known as the kneecap).

  9. Divisions of the SkeletonAPPENDICULAR SKELETON • The Shoulder Girdle, also called the Pectoral Girdle, is composed of four bones: two clavicles and two scapulae . • The Pelvic Girdle, also called the hip girdle, is composed to two coxal (hip) bones. • Within PELVIC GIRDLE there are several other little bones, the ischium, the pubis, and the ilium.

  10. Human Skull

  11. The UPPER ExtremityHuman Arm, Forehand, Hand

  12. The LOWER ExtremityHuman Thigh, Leg, Foot, Patella

  13. INTRODUCTION TO BONES

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