L2 Gym - Muscular system

What percentage of a person's total weight is made up by muscles in the body?

• 20%

• 30%

• 40%

• 50%

Which type of muscle tissue is responsible for the contraction of the heart?

• Smooth muscle

• Skeletal muscle

• Cardiac muscle

• Voluntary muscle

What is the function of the neuromuscular system?

• To provide energy to the body

• To facilitate communication between the brain and muscles

• To store nutrients

• To protect internal organs

Which of the following is an example of smooth muscle tissue?

• Heart

• Hamstrings

• Walls of the small intestine

• Triceps

What type of control is associated with cardiac muscle?

• Involuntary, not under conscious control (autonomic nervous system)

• Voluntary, under conscious control (somatic nervous system)

• Involuntary, under conscious control

• Voluntary, not under conscious control

Which muscle type is described as having a striated appearance?

• Cardiac and skeletal

• Smooth and cardiac

• Smooth and skeletal

• Cardiac only

What is the primary function of smooth muscle in the digestive system?

• To break down ingested food and drink

• To pump blood throughout the body

• To create bodily movement

• To stabilize the body

Which characteristic of muscle tissue allows it to return to its original size and shape?

• Elasticity

• Contractility

• Extensibility

• Excitability

What is the role of tendons in skeletal muscles?

• To pull on bones and create movement

• To contract and relax the heart

• To control the volume of blood flow

• To break down food in the digestive system

What is the outermost layer that wraps the whole muscle?

• Endomysium

• Perimysium

• Epimysium

• Sarcomere