Understanding the Muscular System

What is the primary benefit of exercising for muscles?

• It makes muscles weaker.

• It helps muscles grow and become stronger.

• It has no effect on muscles.

• It only affects the heart.

Approximately how many muscles are there in the human body?

• 600

• 400

• 200

• 800

Which type of muscle is responsible for moving your arms and legs?

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

• Involuntary muscle

What is the role of smooth muscles in the body?

• They are responsible for heart contractions.

• They are found in the skeletal system.

• They help in voluntary movements.

• They assist in digestion and are involuntary.

Which muscle type is known as the myocardium?

• Cardiac muscle

• Skeletal muscle

• Smooth muscle

• Voluntary muscle

What happens to muscles when they atrophy?

• They become more flexible.

• They turn into fat.

• They get smaller and weaker.

• They become larger and stronger.

How do muscles work to move bones?

• By rotating and twisting.

• By pushing and pulling.

• By expanding and contracting.

• By contracting and relaxing.

Which muscle is considered the largest in the human body?

• Biceps

• Masseter

• Gluteus maximus

• Triceps

What is the most active muscle in the human body?

• Biceps

• Heart

• Masseter

• Gluteus maximus

How many muscles does it take to frown compared to smiling?

• 17 to frown, 43 to smile

• 43 to frown, 17 to smile

• 30 to frown, 30 to smile

• 20 to frown, 20 to smile