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Skeletal System
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25
Anthropology
12th Grade
11/04/2013

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Term
Skeletal System
Definition
Comprises the bony framework of the body.
Term
Fontanel
Definition
A spot where the bone has not been formed yet.
Term
Diaphysis
Definition
A hollow cylinder of hard, compact bone.
Term
Medullary canal
Definition
Center of the shaft filled with yellow bone marrow, mostly made of fat cells.
Term
Endosteum
Definition
The lining of the marrow canal that keeps the cavity intact.
Term
Spongy bone
Definition
Where hard bone is no longer needed.
Term
Periosteum
Definition
A tough fibrous tissue which contains blood vessels, lymph vessels, and nerves. Covers the bone.
Term
Articular cartilage
Definition
Covers the epiphysis, acts as a shock absorber between two bones that meeet to form a joint.
Term
Osteoblasts
Definition
Bone cells that deposit the new bone.
Term
Osteoclasts
Definition
Immense bone cells that secrete enzymes.
Term
Axial skeleton
Definition
Consists of the skull, spinal column, ribs, sternum, and hyoid bone.
Term
Hyoid bone
Definition
A u-shaped bone in the neck, to which the tongue is attached.
Term
Suture
Definition
An irregular band of connective tissue.
Term
Ossification
Definition
Mineral matter replaces cartilage, creating bone.
Term
Cervical vertebrae
Definition
Located in the neck area.
Term
Thoracic vertebrae
Definition
Located in the chest area.
Term
Lumbar vertebrae
Definition
Located in the back.
Term
Sacrum
Definition
A wedge-shaped bone formed by five fused bones.
Term
Cocyx
Definition
Also known as the tail bone.
Term
Sternum
Definition
Also known as the breastbone; is divided into three parts.
Term
Humerus
Definition
The only bone in the upper arm, is the second largest bone in the body.
Term
Radius
Definition
The bone running up the thumb
Term
Ulna
Definition
Largest bone in the forearm.
Term
Carpals
Definition
Wrist bone
Term
Femur
Definition
The longest and strongest bone in the body, the thigh bone.
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