Muscular System Quiz

What is one of the primary functions of the muscular system?

• Produces hormones

• Produces movement

• Produces enzymes

• Produces blood cells

Which characteristic of muscle tissue allows it to respond to a stimulus?

• Contractility

• Extensibility

• Excitability

• Elasticity

What characteristic of muscle tissue allows it to stretch beyond its original shape?

• Excitability

• Contractility

• Extensibility

• Elasticity

What is the function of the epimysium?

• Covers a fascicle

• Covers the whole muscle

• Covers an individual muscle fiber

• Transmits impulses

What type of muscle tissue is unstriated and involuntary?

• Skeletal

• Cardiac

• Smooth

• Connective

What are the two main types of myofilaments involved in muscle contraction?

• Actin and myosin

• Collagen and elastin

• Keratin and fibrin

• Tubulin and dynein

Where are the myofilaments attached to each other?

• M-line

• Z-line

• A-band

• I-band

What type of energy is required for muscle contraction?

• ATP

• GTP

• ADP

• AMP

What happens to the sarcomere during muscle contraction?

• It lengthens

• It shortens

• It remains the same

• It disappears

What are the extensions of myosin filaments called?

• Heads

• Tails

• Arms

• Legs