5. Muscular System

What is 2:28 p.m. in 24-hour time format?

• 14:28

• 02:28

• 22:28

• 12:28

Which type of muscle is voluntary?

• Cardiac muscle

• Skeletal muscle

• Visceral muscle

• Both A and C

Which types of muscles are involuntary?

• Cardiac and skeletal muscles

• Skeletal and visceral muscles

• Cardiac and visceral muscles

• All of the above

Why is skeletal muscle considered voluntary?

• Because it operates without our conscious control

• Because it is associated with the heart

• Because we can choose to move it, such as when brushing our teeth or walking

• Because it moves our organs without our control

Why is visceral muscle considered involuntary?

• Because it helps us perform voluntary actions like jumping

• Because we can consciously control it

• Because it moves our organs without our conscious control

• Because it is found in the limbs

What does excitability/irritability of muscles mean?

• They stretch

• They return to their original shape

• They shorten

• They respond to stimulus

What is the term used to describe the ability of muscles to shorten?

• Extensibility

• Elasticity

• Contractility

• Flexibility

What property of muscles allows them to stretch?

• Contractility

• Elasticity

• Extensibility

• Excitability

What property of muscles describes their ability to return to their original shape?

• Extensibility

• Elasticity

• Contractility

• Excitability

What is one of the functions of skeletal muscles?

• To produce hormones

• To attach to bones to provide movement

• To filter blood

• To absorb nutrients