Skeletal System Flashcards
Parts of the skeletal system
· Bones (skeleton)
· Joints
· Cartilages
· Ligaments (bone to bone)
· (tendon=bone to muscle)
(bone to bone)
Ligaments
· (=bone to muscle)
tendon
2 types of skeleton
Appendicular skeleton
Axial skeleton
Parts of Appendicular skeleton
Limbs, girdle
Parts of Axial skeleton
Skull, spinal cord/column
Function of bones
Support of the body
· Protection of soft organs
· Movement due to attached skeletal muscles
· Storage of minerals and fats
· Blood cell formation
The skeleton has - bones
206
Two basic types of bone tissue
Compact bone ·
· Spongy bone
Homogeneous
Compact bone
· Small needle-like pieces of bone
· Many open spaces
· Spongy bone
Bones are classified by their shape:
1.Long
2.Short-
3.Flat-
4.Irregular-
- bones are longer than they are wide
Arms = humerus
Legs = femur
Humerus of arm
Long
usually square in shape, cube like
Wrist, ankle
Carpals of wrist
Short
flat , curved
Skull, sternum
Parietal bone of skull
Flat
odd shapes
Vertebra, pelvis
Irregular
A break in a bone
Bone fractures
Bone fractures
Simple
Compound
Greenstick
Closed fracture
Break does not penetrate through skin
Simple fracture
Open fracture
Penetrate through skin
Compound fracture
Hard to repair
Break like green twig
Greenstick fracture
allows extension and retraction of an appendage.
A hinge joint
allows for radial movement in almost any direction.
Femur attached to pelvis
A ball and socket joint
usually affects joints symmetrically (on both sides equally), may initially begin in a couple of joints only, and most frequently attacks, the wrists, , hands, elbows, shoulders, knees and ankles
Rheumatoid arthritis