One of the characteristics of muscles is extensibility. This allows muscles to:

• consume oxygen
• contract
• react to an impulse
• stretch

The walls of the heart are made of:

• cardiac muscle
• contractile muscle
• striated muscle
• voluntary muscle

Where would you find a voluntary muscle?

• Attached to the femur
• In blood vessel walls
• Inside the heart
• Lining the stomach

After you swallow food, what kind of muscle moves the food toward your stomach?

• Cardiac
• Skeletal
• Smooth
• Voluntary

What muscle movement occurs when you move your hand from an open palm to a fist?

• Abduction
• Adduction
• Extension
• Flexion

When a muscle attaches to a bone, the end that does not move is the:

• insertion
• origin
• root
• tendon

Of the following, what muscle is superior to the other three?

• Gastrocnemius
• Intercostals
• Sternocleidomastoid
• Trapezius

Of the following, what muscle would do the most work if you ran five miles?

• Biceps
• Pectoralis major
• Quadriceps femoris
• Sternocleidomastoid

What muscle is located above the waist?

• Deltoid
• Gastrocnemius
• Gluteus maximus
• Tibialis anterior

Karina’s leg was in a cast for ten weeks. You would expect her leg muscles to experience some degree of:

• atrophy
• circumduction
• hypertrophy
• rotation