Skeletal System Basics
What are the two main divisions of the human skeleton?
Axial and appendicular skeleton
What type of bone is the femur?
Long Bone
The axial skeleton includes what three main areas?
Skull, vertebral column, thoracic cage
The appendicular skeleton includes the bones of the ______ and ______.
Bones of the arms and the legs
Which type of joint allows the greatest range of motion?
Ball-and-socket joint
What is the main function of the skeletal system that helps us stand upright?
Support
The wrist and ankle bones are examples of what type of bone?
Short Bones
The skull protects which organ?
Brain
The clavicle and scapula make up which girdle?
Shoulder girdle
What type of joint allows you to turn your head from side to side?
Pivot Joint
Where does blood cell formation occur?
In the bone marrow
Flat bones are designed for what purpose?
Protection and muscle attachment
What bone is known as the breastbone?
Sternum
Which bone is found in the upper arm
Humerus
What are the three main categories of joints by movement?
Synarthroses (immovable), amphiarthroses (slightly movable), diarthroses (freely movable).
What mineral is primarily stored in bones?
Calcium
What type of bone is the vertebra?
Irregular bone
How many vertebrae are in the human spine (approximately)?
33
The pelvic girdle connects the lower limbs to what part of the skeleton?
The axial skeleton
What is another name for synarthroses and where are they commonly found?
Immovable joints; found in the skull.
Name all five main functions of the skeletal system.
Support, protection, movement, mineral storage, blood cell production
The patella is an example of what type of bone?
Sesamoid bone
What small U-shaped bone in the neck supports the tongue?
Hyoid bone
The bones of the fingers and toes are called what?
Phalanges
Name one example of each: immovable, slightly movable, and freely movable joint.
Immovable: skull; Slightly movable: between vertebrae; Freely movable: shoulder