Medical Science 1 Muscle Review

How many muscles are there in the human body?

• More than 600

• Exactly 500

• About 450

• Less than 300

Which type of muscle is controlled voluntarily?

• Cardiac

• Visceral

• Skeletal

• None of the above

What type of muscle is the heart primarily composed of?

• Skeletal

• Smooth

• Cardiac

• Elastic

Which of the following muscle types are classified as involuntary?

• Skeletal only

• Cardiac and smooth

• Smooth only

• Cardiac only

What is one of the primary functions of skeletal muscles?

• Transport oxygen

• Attach to bones to provide movement

• Filter blood impurities

• Absorb nutrients

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

• Produce heat and energy

• Help maintain posture

• Protect internal organs

• Regulate heart rate

How do skeletal muscles contribute to the protection of the body?

• By producing antibodies

• By detoxifying chemicals

• By protecting internal organs

• By regulating blood pressure

What property of muscles describes their ability to respond to a stimulus?

• Contractibility

• Extensibility

• Elasticity

• Excitability

Which property allows muscles to contract and cause movement?

• Excitability

• Extensibility

• Elasticity

• Contractibility

What is the ability of muscles to be stretched known as?

• Excitability

• Contractibility

• Elasticity

• Extensibility