Musculoskeletal Quiz

Which type of muscle tissue is found in the walls of internal organs?

• Cardiac

• Skeletal

• Smooth

• Connective

What is the primary function of skeletal muscles?

• Pumping blood

• Digesting food

• Allowing movement

• Producing hormones

What is the ability of muscle tissue to shorten called?

• Extensibility

• Elasticity

• Excitability

• Contractility

What controls the cardiac muscle?

• Brain

• Spinal cord

• Sinoatrial node (SAN)

• Muscular system

How does cardiac muscle operate?

• Intermittently

• Only during sleep

• Continuously

• Only during exercise

Which of the following is a characteristic of smooth muscle?

• Voluntary control

• Operated by the autonomic nervous system

• Found only in the skeletal system

• Requires conscious control

What system controls skeletal muscles?

• Autonomic nervous system

• Somatic nervous system

• Central nervous system

• Peripheral nervous system

Which component of the muscle structure is responsible for energy production?

• Myofibril

• Mitochondrion

• Actin thin filament

• Epimysium

What is the role of myofilaments in muscle contraction?

• They provide energy for contraction.

• They slide across each other to allow muscles to stretch and contract.

• They store calcium ions.

• They transmit nerve signals.

In the sliding filament theory, which protein connects and pulls the actin filaments?

• Myosin

• Keratin

• Collagen

• Elastin