题目内容

What is the main function of the digestive system?

A. Hold and receive food.
B. Control the chemical activities of the body.
C. Break the food down to be used for energy.
D. Remove excess water from the body.

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The Appendicular skeleton is comprised of ( ) bones.

A. 126
B. 100
C. 80
D. 110

The human vertebrae are classified as which type of bone?()

A. Long
B. Irregular
C. Flat
D. Short

Which bone is the longest and strongest bone in the human body?()

A. Cranium
B. Femur
C. Tibia
D. Radius

The ribs, sternum and scapulae are all what type of bone?()

A. Long
B. Flat
C. Short
D. Irregular