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The body system that makes our skeleton move.
Muscular system
Muscles are red because lots of ______ goes to them.
Blood
Many cells of the same kind join together to form a ______.
Tissue
Different tissues work together to make an ______.
Organ
The joint found in the arm that helps it bend.
elbow joint
The muscle in the upper arm that contracts when we bend our arm.
biceps
The muscle that works as a pair with the biceps.
triceps
When a muscle becomes shorter and fatter, it is said to ______.
contract
When a muscle goes back to its original shape, it ______.
relaxes
The nutrient that helps build and repair muscles (found in eggs and beans).
Protein
The drink that keeps us rehydrated and helps body functions.
water
Muscles are attached to the skin. (True or False)
false
Biceps and triceps work together to move the arm. (True or False)
true
When the biceps contracts, the arm straightens. (True or False)
false
The triceps relaxes when the arm bends. (True or False)
true
Calcium helps build strong bones and teeth. (True or False)
true
