14.2 The Muscular System

What are the two types of involuntary muscles mentioned in the text?

• Smooth muscle and skeletal muscle
• Smooth muscle and cardiac muscle
• Cardiac muscle and voluntary muscle
• Skeletal muscle and cardiac muscle

Which of the following best describes involuntary muscles?

• Muscles that can be controlled at will
• Muscles that work without conscious control
• Muscles that only work during exercise
• Muscles that are always relaxed

Why are smooth muscles important for the body?

• They help in moving bones
• They control the movement of internal organs
• They are responsible for voluntary movements
• They provide strength to the body

Which type of involuntary muscle is found in the heart?

• Skeletal muscle
• Smooth muscle
• Cardiac muscle
• Striated muscle

How do involuntary muscles differ from voluntary muscles?

• Involuntary muscles are stronger
• Voluntary muscles are found in the heart
• Involuntary muscles cannot be controlled consciously
• Voluntary muscles are always active

Which of the following is a characteristic of smooth muscle?

• Striated appearance
• Involuntary control
• Fast contraction speed
• Attached to bones

What role does cardiac muscle play in the body?

• It helps in digestion
• It pumps blood throughout the body
• It supports the skeleton
• It allows for voluntary movement

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Which statement is true about both smooth and cardiac muscles?

• They are both under conscious control
• They are both types of involuntary muscles
• They are both found in the arms
• They are both striated muscles

What might happen if involuntary muscles did not function properly?

• Increased strength
• Improved coordination
• Digestive issues
• Better control of movements

Which of the following is NOT a function of involuntary muscles?

• Regulating heartbeat
• Controlling breathing
• Moving limbs
• Digesting food