7.1.4 Energy Supply for Muscle Contraction

    Cards (34)

    • What are the components of the musculoskeletal system?
      Bones, muscles, ligaments, tendons
    • Bones form the body's framework and protect internal organs
    • Ligaments connect muscles to bones.
      False
    • Match the muscle type with its function:
      Skeletal ↔️ Voluntary movement
      Smooth ↔️ Involuntary movement of internal organs
      Cardiac ↔️ Heart contraction
    • What is the functional unit of muscle contraction called?
      Sarcomere
    • Sarcomeres contain actin and myosin filaments.
    • ATP is the primary energy source for muscle contraction
    • Order the energy sources for muscle contraction based on their utilization time from shortest to longest:
      1️⃣ ATP
      2️⃣ Creatine Phosphate
      3️⃣ Glycogen
      4️⃣ Fat
    • How long can creatine phosphate provide energy for muscle cells?
      10-20 seconds
    • Creatine phosphate rapidly replenishes ATP
    • Glycogen can produce ATP without oxygen.
    • What is a disadvantage of using fat as an energy source for muscle contraction?
      Requires oxygen, slow breakdown
    • Match the muscle type with its characteristic:
      Skeletal ↔️ Voluntary movement
      Smooth ↔️ Involuntary movement of internal organs
      Cardiac ↔️ Heart contraction
    • What does ATP break down into during hydrolysis?
      ADP and a phosphate group
    • ATP provides immediate energy for muscle contraction.
    • During short bursts of activity, ATP provides the necessary energy
    • What is the energy source for long-term muscle activity?
      Fat
    • What is the primary energy source for muscle contraction?
      ATP
    • When a muscle contracts, ATP undergoes hydrolysis, releasing energy.
    • Arrange the energy sources for muscle contraction in order of utilization time from shortest to longest.
      1️⃣ ATP
      2️⃣ Creatine Phosphate
      3️⃣ Glycogen
      4️⃣ Fat
    • ATP provides immediate energy but is limited in availability.
    • Which energy source rapidly replenishes ATP for short-term bursts?
      Creatine Phosphate
    • Fat produces ATP with oxygen and has a high yield but requires a slow breakdown.
    • Glycogen produces ATP without oxygen but is slower than ATP hydrolysis.
    • What are the components of the musculoskeletal system?
      Bones, muscles, ligaments, tendons
    • Match the muscle type with its primary characteristic:
      Skeletal ↔️ Voluntary movement
      Smooth ↔️ Involuntary movement
      Cardiac ↔️ Heart contraction
    • What is the functional unit of muscle contraction?
      Sarcomere
    • Cardiac muscle cells are striated and have intercalated discs.
    • There are three types of muscle tissues: skeletal, smooth, and cardiac.
    • What is required for aerobic respiration in muscle cells?
      Oxygen
    • Aerobic respiration produces more ATP than anaerobic respiration.
    • Anaerobic respiration, also known as glycolysis, produces ATP and lactic acid in the cytoplasm.
    • Match the energy source with its utilization time during exercise:
      ATP ↔️ Instant
      Creatine Phosphate ↔️ Short-term
      Glycogen ↔️ Medium-term
    • What is the end product of anaerobic respiration in muscle cells?
      Lactic acid