Understanding the Muscular System

What is the primary function of the muscular system?

• To produce hormones

• To help you move and stay strong

• To digest food

• To circulate blood

How many muscles are there in the human body?

• Exactly 500

• Over 600

• About 200

• Less than 100

Which type of muscle is voluntary?

• Skeletal muscles

• Involuntary muscles

• Smooth muscles

• Cardiac muscle

Where can smooth muscles be found?

• In the brain

• In the heart

• Attached to bones

• In the walls of the stomach and intestines

What is the role of cardiac muscle?

• To pump blood throughout the body

• To move food through the digestive system

• To control voluntary movements

• To produce red blood cells

What connects muscles to bones?

• Ligaments

• Tendons

• Nerves

• Cartilage

Which muscle type works automatically without conscious control?

• Voluntary muscles

• Skeletal muscles

• Facial muscles

• Smooth muscles

What happens when a muscle contracts?

• It lengthens and relaxes

• It pulls on a bone, causing movement

• It produces hormones

• It stops working

Which muscle type is found only in the heart?

• Involuntary muscle

• Smooth muscle

• Skeletal muscle

• Cardiac muscle

What is the function of smooth muscles in the digestive system?

• To move food through the digestive tract

• To pump blood

• To control voluntary movements

• To produce digestive enzymes