What does the skeleton produce?
Blood cells.
What essential mineral does the skeleton store?
Calcium.
How does the skeleton contribute to body movement?
It enables movement.
How are long bones proportioned compared with their width?
They are longer than they are wide.
What protective feature do long bones have?
A thick outer layer.
What tissue holds bones together in fibrous joints?
Dense collagenous connective tissue.
Where do fibrous joints occur?
Between the bones of the skull.
What connects bones in cartilaginous joints?
Cartilage.
How does movement in cartilaginous joints compare with fibrous and highly movable joints?
More than in fibrous joints, but less than in highly movable joints.
What characterizes the cavity of a synovial joint?
It is fluid-filled.
Which joints are examples of synovial joints?
The shoulder, knee, and elbow.
How are flat bones constructed?
They consist of two thin layers of bone.
Which vital organs do flat bones protect?
The heart, lungs, and brain.
What functions do sesamoid bones perform?
They relieve muscle and tendon tension, increase weight-bearing, and protect muscles from strain.
What distinguishes irregular bones from other bone categories?
Their complex, varied shapes do not fit other bone categories.
What are three functions of synovial fluid in synovial joints?
It lubricates joint surfaces, absorbs shock, and nourishes cartilage.
What characterizes the shape and proportions of short bones?
They are small, cube-shaped bones with nearly equal length and width.
Answer 7 questions on The Musculoskeletal System.
1. Which set of functions does the skeleton perform?
2. A patient has reduced bone-marrow blood-cell production and low calcium reserves, while the bones still provide body support. Which skeletal functions are impaired?
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