muscular

• What is the main intent of the lesson on the muscular system?

  To classify the location and major muscles in the body.
• What is the function of the muscular system?

  To facilitate movement of the body and maintain posture.
• What are the three types of muscle identified in the study material?

  Skeletal, smooth, and cardiac muscle.
• How are striated muscles characterized under a microscope?

  They show alternate light and dark bands or striations when stained.
• What is the role of tendons in the muscular system?

  Tendons connect muscles to bones and transfer muscle movement to bones.
• Why are tendons prone to injury when overstrained?

  Because they have fewer blood vessels and take longer to heal.
• What is fascia and its function in the body?

  Fascia is connective tissue that surrounds and holds organs, blood vessels, and muscles in place.
• What is a concentric contraction?

  A type of muscle contraction where muscles shorten while generating force.
• How does an eccentric contraction differ from a concentric contraction?

  An eccentric contraction results in the elongation of a muscle while generating force.
• What are isotonic contractions?

  Isotonic contractions maintain constant tension in the muscle as it changes length.
• What type of muscle is smooth muscle and where is it found?

  Smooth muscle is involuntary and found in internal organs and blood vessels.
• What type of muscle is cardiac muscle?

  Cardiac muscle is involuntary and found only in the heart.
• What distinguishes voluntary muscles from involuntary muscles?

  Voluntary muscles are under conscious control, while involuntary muscles are not.
• What are the characteristics of isometric, eccentric, and concentric contractions?

  • Isometric: Stays the same length; no movement in bones or joints.
  • Eccentric: Lengthens while controlling movement; used in actions like kicking a football.
  • Concentric: Shortens while generating movement; used in bending the elbow.
• What is muscular dystrophy?

  Muscular dystrophy is a genetic condition that causes gradual muscle weakening.
• What are some symptoms of muscular dystrophy?

  Symptoms include difficulty getting up, muscle pain, and walking on toes.
• What treatments are available for muscular dystrophy?

  Treatments include medication, physiotherapy, occupational therapy, and surgery.
• Why does muscular dystrophy cause muscles to weaken?

  It is caused by a mutation in the genetic code affecting muscle protein production.
• What are the extension activities suggested for the lesson on the muscular system?

  1. Write 2 exam questions on today's topic.
  2. Create a revision mind map on today's topic.
  3. Research an article on the muscular system to share findings.