Skeletal System

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Skeletal System

• By Oscar Aguilera Vince Maala

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Mandible lower part of the jawSkull head
Clavicle shoulder bladeHumerus upper arm
Ulna forearm bone going from the thumb to the
elbowRadius forearm bone going from pinky to
elbowCarpals wrist boneMetacarpals first
segment of the fingerPhalanges 2 smaller
finger bonesSternum connects ribs togetherRib
cage the ribsVertebral column back
bonePelvic girdle hip boneFemur thigh
bonePatella knee capTibia front bone of the
shin Fibula back bone of the shinTarsal
heelMetatarsals - feet
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Ball and Socket

• allows rotation. There is a ball shaped end to
  a bone which sits in a socket and is able to move
  in almost any direction. (hip and leg)

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Hinge

• allows flexion and extension. The joint is
  like a hinge on a door, allowing the joint to
  open and close. (knee)

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Condyloid

• allows circular motion, the ball rests up
  against the end of a bone rather than inside a
  socket. (wrist rests against the end of the
  radius bone)

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Saddle

• allows movement in various directions. (thumb
  meets the wrist the bones fit up against each
  other like a saddle fits over the back of a horse

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Pivot

• allows bones to pivot or rotate against each
  other. (first cervical vertebrae second
  cervical vertebrate) pivot against each other.

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Scoliosis

• Scoliosis is not a disease but a descriptive
  term.
• Scoliosis is an abnormal side to side (lateral)
  curves in the spinal column.
• Scoliosis effects 2 of women and 0.5 of men.
• Scoliosis is congenital spine genetic conditions,
  neuromuscular problems.
• Symptoms are shoulders are at different heights,
  head is not centered with pelvis, rib cages are
  different heights, uneven waist, and entire body
  is leaning to one side.

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Skull Joint

• Fibrous joints (sutures in the skull).

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Osteoarthritis

• Common kind of arthritis among older people.
• Joint disease that affects the slippery tissue
  that covers the ends of joints of bones.
• Symptoms are joint pain and limited movement.
• More than 20 million people in the U.S. have this
  problem.

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Definitions

• Bone -The dense, porous, calcified connective
  tissue forming the major portion of the skeleton
  of most vertebrates.
• Cartilage -A tough, elastic, fibrous connective
  tissue found in various parts of the body, such
  as the joints, outer ear, and larynx.
• Joint-A point of articulation between two or more
  bones, especially such a connection that allows
  motion
• marrow -The soft, fatty, vascular tissue filling
  the cavities ofbones, having a stroma of
  reticular fibers and cells
• Ossification -The hardening or calcification of
  soft tissue into a bonelike material.
• Osteocyte -a branched cell embedded in the matrix
  of bone tissue.