Muscular System Crossword

Muscle found in the back of your arm, helps to extend arm.
Muscle that helps to bend arm up, flexing your "guns" shows them off.
Large muscle group found in back of the leg, helps to bend leg.
Largest back muscle.
Muscle used to help to straighten leg.
Also known as your shoulder muscles.
This muscle runs from the top of your back/shoulders to the bottom of your head.
One of the strongest muscles in your lower body, also known as the butt.
The large chest muscle helps when you perform push ups or bench press.
This muscle makes up the large part of your calf.
Your muscles __________ when they shorten.
Your muscles ___________ when they lengthen.