Muscular System Knowledge

What are the three main types of muscles in the human body?

• voluntary muscles, involuntary muscles, striated muscles

• skeletal muscles, smooth muscles, and cardiac muscles

• biceps, triceps, quadriceps

• flexor muscles, extensor muscles, oblique muscles

What is the primary function of skeletal muscles?

• Support nerve function

• Generate heat

• Facilitate movement

• Store nutrients

Describe the process of muscle contraction.

• The troponin-tropomyosin complex does not play a role in muscle contraction.

• The process of muscle contraction involves the release of acetylcholine, depolarization, calcium release, troponin-tropomyosin complex interaction, cross-bridge formation, and actin-myosin sliding.

• Muscle contraction occurs due to the release of potassium ions instead of calcium ions.

• The process of muscle contraction involves the release of adrenaline instead of acetylcholine.

Which type of muscle is involuntary and found in organs like the stomach and intestines?

• Smooth muscle

• Cardiac muscle

• Skeletal muscle

• Voluntary muscle

How do smooth muscles differ from skeletal muscles?

• Smooth muscles are striated, while skeletal muscles are non-striated.

• Smooth muscles are voluntary and attached to bones, while skeletal muscles are involuntary and found in internal organs.

• Smooth muscles are involuntary and found in internal organs, while skeletal muscles are voluntary and attached to bones.

• Smooth muscles are under conscious control, while skeletal muscles are not.

Explain the role of cardiac muscles in the body.

• Cardiac muscles regulate body temperature

• Cardiac muscles help in digestion

• Cardiac muscles play a crucial role in maintaining the circulatory system by pumping blood.

• Cardiac muscles aid in breathing

What is the function of tendons in relation to muscles?

• Tendons regulate the temperature of muscles

• Tendons store excess energy produced by muscles

• Tendons provide structural support to muscles

• Tendons transmit the force generated by muscles to bones.

What is the sliding filament theory in muscle contraction?

• The sliding filament theory explains muscle contraction as the fusion of actin and myosin filaments.

• The sliding filament theory states that muscle contraction is caused by the expansion of sarcomeres.

• The sliding filament theory involves the contraction of myosin filaments over actin filaments.

• The sliding filament theory describes muscle contraction as the sliding of actin filaments over myosin filaments.

How do muscles generate movement in the body?

• Muscles generate movement by stretching and compressing.

• Muscles generate movement by inflating and deflating.

• Muscles generate movement by contracting and relaxing.

• Muscles generate movement by expanding and contracting.

What are the antagonistic pairs of muscles and how do they work together?

• Antagonistic muscles work together by contracting and relaxing simultaneously.

• Antagonistic muscles work together by contracting and relaxing in the same direction.

• Antagonistic muscles work together by contracting and relaxing randomly.

• Antagonistic pairs of muscles work together by contracting and relaxing alternately to produce movement in opposite directions.