Muscular Contraction Quiz

Where is the majority of ATP produced in a cell?

• Nucleus

• Ribosomes

• Mitochondria

• Golgi apparatus

What is the result of the electrical signal sent to the muscle by acetylcholine?

• Muscle relaxation

• Muscle contraction

• Nerve impulse inhibition

• Calcium release

Where is acetylcholine released from?

• Synaptic cleft

• Neuromuscular junction

• Axon terminal

• Dendrite

What is the primary function of acetylcholine in the neuromuscular junction?

• To inhibit muscle contraction

• To transmit nerve impulses for muscle contraction

• To store energy

• To break down proteins

Which section of the sarcomere contains only myosin?

• I Band

• A Band

• H Zone

• Z Line

Which part of the sarcomere shortens during muscle contraction?

• A Band

• I Band

• Z Line

• H Zone

What happens to the A Band during muscle contraction?

• It shortens

• It lengthens

• It remains the same

• It disappears

Which structure in the sarcomere is directly involved in muscle contraction?

• Z Line

• Myosin Crossbridge

• I Band

• H Zone

What happens to the sarcomere during muscle contraction?

• It elongates

• It shortens

• It remains the same

• It disintegrates

Which of the following is NOT a component of the sarcomere?

• Actin

• Myosin

• Hemoglobin

• Z line