When a muscle contracts, it _______. sh_rt_r
gets shorter
Who studies how the brain and the rest of the nervous system work?
Neuroscientist
Which type of muscle helps to move your arms and legs?
Skeletal muscles
What are the three main types of muscles in the body?
Skeletal, Cardiac, Smooth
Who studies the structure of the body?
Anatomist
What are the two main muscles in your upper arm?
Biceps and Triceps
How do muscles work?
by relaxing and contracting
Which of the following is an example of smooth muscle?
Stomach
Two muscles working together. One contracts while the other relaxes. This action is called ___________.
Antagonistic
Which type of muscle pumps blood throughout your body?
Cardiac muscle