| A | B |
| heat | movement, producing _______, and stabilizing joints are the functions of muscles |
| feet | where dorsiflexion and inversion occur |
| shape | the The trapezius and deltoid are named for the ______ of the muscle |
| ATP | the energy source directly responsible for muscle contraction |
| involuntary | cardiac and smooth muscle are ________________ |
| abduction | the movement that involves moving the arms and legs away from the midline of the body |
| tendon | the structure that structure attaches muscle to bone |
| muscle fatigue | occurs when a muscle is unable to contract |
| muscle fiber | the name for a muscle cell |
| skeletal | the type of muscle responsible for generating heat |
| smooth | the type of muscle is found in the walls of hollow visceral organs |
| orbicularis oculi | the muscle is responsible for blinking and squinting |
| orbicularis oris | the kissing muscle |
| zygomaticus | the smiling muscle |
| platysma | the frowning muscle |
| frontalis | the muscle that raises the eyebrows and wrinkles the forehead |
| deltoid | the muscle that abducts the arm |
| pectoralis major | the muscle that adducts and flexes the shoulder |
| sartorius | the muscle that crosses the legs |
| gastrocnemius | the muscle responsible for plantar flexion and is known as the "toe dancer's" muscle |
| sternocleidomastoid | the muscle that flexes the neck and rotates the head |
| biceps brachii | the muscle that flexes the elbow and supinates the arm |
| trapezius | the muscle that allows you to shrug your shoulders |
| triceps brachii | the muscle that extends the forearm |
| gluteus maximus | the muscle that is used to extend the hip when climbing stairs |
| quadriceps | the muscle group that extends the knee |
| hamstring | the muscle group that flexes the knee and extends the hip |
| masseter | the muscle that closes and the jaw and is used in chewing |