Unit 6:4 Skeletal System

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Skeletal system.

Suture

Area where cranial bones have joined together.

Endosteum

Membrane that lines the medullary canal.

Periosteum

Tough membrane on the outside of bone.

Ribs

Twelve pairs of bones that surround the heart and lungs.

Fibula

Lateral bone of the lower leg.

Os Coxae

Two bones that form the pelvic girdle.

Ligament

Connective tissue band that holds bones together.

Carpal

Wrist bone.

Yellow Marrow

Material inside the medullary canal.

Cranium

Eight bones that surround and protect the brain.

Radius

Lower arm bone on thumb side.

Appendicular

Bones that form the extremeties.

Sternum

Breastbone.

Femur

Thigh bone.

Red Marrow

Material foind in some bones that produces blood cells.

Tarsal

Anklebone.

Ulna

Larger bone of lower arm.

Sinuses

Air spaces in the bones of the skull.

Epiphysis

An extremity or end of bone.

Axial

Bones that form the main trunk of the body.

Diaphysis

Long shaft of bones.

Humerus

Upper arm bone.

Vertebrae

Twenty-six bones of the spinal column.

Joint

Area where two or more bones join together.

Scapula

Shoulder bone or shoulder blade.

Tibia

Medial bone of the lower leg.

Framework, protection, levers, production of blood cells, and storage

Five functions of bones.

Frontal, parietal(2x), temporal(2x), occipital, ethmoid, and sphenoid

Eight bones that form the cranium.

7 Cervical, 12 Thoracic, 5 Lumbar, Sacrum, and Coccyx

Twenty-six vertebrae.

True Ribs

Attach directly to the sternum on the front of the body.

False Ribs

Attach to the carilage of the rib above.

Floating Ribs

Have NO attachment on the front of the body.

Xiphoid Process

Small piece of cartilage at the bottom of the sternum.

Ilium, Ischium, and Pubis

Three regions on each ox coxae.

Diarthrosis

Freely movable.

Amphiarthrosis

Slightly movable.

Synathrosis

Immovable.

Arthritis

Mostly occurs as a result of aging.

Fractures

A crack or break in a bone.

Osteomyelitis

Bone inflammation usually caused by a pathogenic organism.

Osteoporosis

Increased porosity or softening of the bones; causes by a hormone deficiency.

Sprain

When a twisting action tears the ligaments at a joint.

Bursitis

Inflammation of the bursae, small, fluid-filled sacs surrounding the joints.

Dislocation

When a bone is forcibly displaced from a joint.

Scoliosis

A side-to-side, or lateral, curvature of the spine.

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