What is the main job of the muscular system?, To help the body move, To digest food, To pump blood, Muscles work closely with which body system?, Respiratory system, Skeletal system, Digestive system, Muscles are made of bundles of long, thin ________., bones, cells, joints, What sends messages to muscles?, Hair, Teeth, Nerves, Muscles contract when they ________., melt, tighten, disappear, What happens when muscles contract?, They become weaker, They shorten and cause movement, They stop working, Muscles can only ________ on bones., push, pull, jump, Why do muscles work in pairs?, One pulls while the other relaxes, To make bones stronger, To help us sleep, Which muscle contracts when you bend your arm?, Tricep, Bicep, Heart muscle, Which muscle relaxes when you bend your arm?, Bicep, Stomach muscle, Tricep, Skeletal muscles are also called ________ muscles., involuntary, voluntary, automatic, Voluntary muscles move when you ________., make a decision to move them, fall asleep, stop thinking, Which of these is a voluntary action?, Heart beating, Digesting food, Kicking a ball, Which of these is an involuntary action?, Jumping, Heart beating, Waving, Involuntary muscles work ________., automatically, only at school, when we exercise, Which body part controls muscles by sending messages?, Brain, Nose, Fingers, Which muscle helps pump blood around the body?, Bicep, Heart muscle, Tricep, What happens when you straighten your arm?, The bicep contracts, The tricep contracts, Both muscles stop working, Which sentence is true?, Muscles push bones, Muscles pull bones, Bones pull muscles, Why are skeletal muscles important?, They help the body move, They help us hear, They help us smell

Muscles

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