Muscular System Quiz

What is the primary function of the muscular system?

• To protect the body from infections

• To provide structural support to bones

• To produce movement and maintain posture

• To regulate body temperature through sweating

Which type of muscle is responsible for voluntary movements?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Involuntary muscle

Which of the following is NOT a function of muscles?

• Generating heat

• Supporting blood circulation

• Protecting internal organs

• Producing red blood cells

Where can smooth muscle be found in the human body?

• Attached to bones

• In the heart

• In the walls of blood vessels and digestive organs

• Underneath the skin

What characteristic distinguishes cardiac muscle from other muscle types?

• It is voluntary and has striations

• It contracts without conscious thought and has intercalated discs

• It is attached to bones and moves the skeleton

• It is found in the walls of the digestive tract

Which of the following muscles is involved in breathing?

• Biceps brachii

• Diaphragm

• Quadriceps femoris

• Trapezius

What is the term for the connection between a muscle and bone?

• Cartilage

• Ligament

• Tendon

• Fascia

Which muscle group is primarily responsible for extending the knee?

• Hamstrings

• Biceps

• Quadriceps

• Triceps

What happens to a muscle during contraction?

• The muscle elongates and thickens

• The muscle shortens and thickens

• The muscle stays the same length but generates heat

• The muscle relaxes completely

What term refers to the increase in muscle size due to regular exercise?

• Atrophy

• Hypertrophy

• Metaplasia

• Hyperplasia