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Chapter 6 // Skeletal System (6.1 - Primary Function of the Skeletal…
Chapter 6 // Skeletal System
6.1 - Primary Function of the Skeletal System
Support
the bones in legs nd pelvis support trunk
the atlas (1st vertebrae) supports the skull, etc.
Protection
The skull protects the brain
the rib cage protects the heart and lungs, etc.
Body Movement
skeletal muscles attached to bones by tendons
serve as levers to move bones
Hematopoiesis
Definition: Blood cell formation
all blood cells are formed in the red marrow of certain bones
Inorganic Salt Storage
Bone Stores many minerals
Calcium
Phosphorus
Others
Also a means of calcium homeostasis
Energy Storage
yellow marrow in the shaft of long bones
serve as an important chemical energy storage
6.2 - Classify bones according to shape and compare the structure and functions of compact and spongy bone
Bone Structure
Bones are classified by their SHAPE
Long bones
consist of a shaft with two ends
Short Bones
are cube like
Most skull bones
Breast Bone - sternum
Shoulder Blades - scapulae
ribs
Flat bones
are thin and usually curved
Irregular Bones
are not long, short or flat
Sesamoid Bones
develop within a tendon