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Human Body
Systems
Question | Answer |
---|---|
Each alveolus is surrounded by a network of | cappillaries |
Which type of muscle is found only in the heart? | caridiac muscle |
Exercise is important for muscles because it | helps maintain strength and flexibility. |
How do pairs of skeletal muscles work together? | While one muscle in the pair contracts, the other returns to its original length. |
Enzymes in saliva break down food in which process? | chemical digestion |
Which type of human body tissue can contract or shorten? | muscle tissue |
One of the main roles of the skeletal system is | to support and protect the body |
What is a group of organs that work together to perform a major function called? | system |
Which type of tissue carries impulses back and forth to the brain from the body? | nervous tissue |