Tuesday, May 12, 2020

Skeletal System


Support, Protection, Movement, Storage, Blood cell formation

=Five functions of bones

Spongy Bone
Small needlelike pieces of bone with lots of open spaces

Compact bone
Dense, looks smooth, and homogeneous

Diaphysis
Shaft of the bone. Makes up most of the bones length and is a compact bone.

Periosteum
Covers and protects the diaphysis. Is a fibrous connective tissue membrane.

Epiphysis
End of a long bone. Consists of a thin layer of compact bone enclosing an area filled with spongy bone.

Yellow marrow
Cavity of the shaft is primarily a storage area for fat tissue.

Red marrow
Confined to the cavities of spongy bones that produce red blood cells.

Freely movable
Shoulder and hip joints are examples of this type of joint

Slightly movable
Ribs and spine are examples of this type of joint

Immovable
Skull would be an example of this type of joint

Ball and Socket
Hip and shoulder joints are example of this joint

Hinge
Movement largely in one plane. Elbow would be an example of this joint.

Pivot
Ring of bone rotates. Wrists would be an example of this joint.

Gliding
Articulations slide on one another vertebrae would be an example of this joint.

Fibrous capsule
Encloses movable joints

Articular cartilage
Covers end of each bone

Synovial Fluid
Fills space between cartilage, lubricating fluid secreted by membrane lining capsule

Bursae
Flat sacs filled with synovial fluid

Tendon
Touch cords which attach muscles to bones

Ligament
Strong band connective tissues which connects bones to bones.

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