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L26 Skeletal Muscle Function, Energy and Types

Mer Scott 12 preguntas 5,0 (1 valoración)

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Preguntas del test (12)

  1. 1Choose the correct statements about sources of energy for skeletal muscle contraction
    1. AATP can be recycled and the stores are long lasting.
    2. BATP is limited in it's stores and only fuels contraction for a few seconds.
    3. CCP, creatine phosphate, is stored in the muscle.
    4. DPi is a product of ATP hydrylosis, called inorganic phosphate.
    5. EEnergy from CP breakdown is used to resynthesize ATP.
    6. FWith CP you can have a contraction up to 50 s.
    7. GThe third back up system for energy generation in muscle is the metabolism of glucose, which can be aerobic or anaerobic.
    8. HThe breakdown of glucose is anabolic and therefore produces free energy to resynthesize CP and ATP.
  2. 2Anaerobic metabolism is the breakdown of glucose via glycolysis to make ATP.
    1. AVerdadero
    2. BFalso
  3. 3Aerobic metabolism takes pyruvate from glycolysis to make Acetyl CoA, and then uses oxygen, to produce less ATP than anaerobic metabolism.
    1. AVerdadero
    2. BFalso
  4. 4Choose the incorrect statement about anaerobic metabolism.
    1. ANo O2 is used.
    2. BIt is slow.
    3. CIt is a short term form of energy production.
    4. DIt is the result of glycolysis.
  5. 5Choose the incorrect statement about aerobic metabolism.
    1. AIt is faster than anaerobic metabolism.
    2. BO2 is used.
    3. CIt is facilitated by a process called oxidative phosphorylation.
    4. DIt is a long term and stable process.
  6. 6Which stage of skeletal muscle movement uses the MOST ATP?
    1. AExcitation
    2. BRelaxation
    3. CContraction
  7. 7Oxygen binding to iron appears red. Iron is a central part of myoglobin in the muscles, so the more oxygen present in the muscle, the redder the colour appears.
    1. AVerdadero
    2. BFalso
  8. 8Choose the correct statement.
    1. ARed muscle fibres are high in myoglobin and low in aerobic enzymes.
    2. BRed muscle fibres are high in myoglobin and high in aerobic enzymes.
    3. CWhite muscle fibres are high in myoglobin and low in aerobic enzymes.
    4. DWhite muscle fibres are low in myoglobin and high in aerobic enzymes.
  9. 9Which type of muscle fibre would a marathon runner/endurance athlete develop?
    1. AMore white and intermediate fibres.
    2. BMore red and intermediate fibres.
  10. 10Choose the incorrect statement about muscle contractions.
    1. AA twitch is a single muscle contraction.
    2. BThe calcium level in the sarcoplasm lasts longer than the muscle tension.
    3. CA series of spaced twitches with increasing tension amplitude is a treppe.
    4. DComplete tetanus is a series of closely spaced twitches summated where you cannot differentiate individual twitches.

Información

Descripción
• Understand the energy sources required for muscle contraction • Describe 3 types of muscle fibre and understand their different properties and functions. • Understand the different types of skeletal muscle function (twitch, twitches and tetanus) by the motor unit. • Summarise key effects of exercise & fatigue on muscle physiology
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English
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