Question types

Start with

Question limit

of 79 available terms

Advertisement Upgrade to remove ads
Print test

5 Written questions

5 Matching questions

  1. Sarcomere
  2. Muscular fascia
  3. Multiple-Wave summation
  4. Aerobic respiration
  5. Myofilaments
  1. a Superficial to the epimysium, separates and compartmentalizes individual muscles or groups of muscles
  2. b As frequency of action potentials increase, frequency of contraction increases, and therefore muscle tension increases.
  3. c protein filaments that are major components of myofibrils
  4. d Requires oxygen and breaks down glucose to produce ATP, carbon dioxide and water. More efficient than anaerobic; produces up to 38 molecules of ATP for each glucose
  5. e the structural and functional unit of skeletal muscle that extends from one Z-disk to another

5 Multiple choice questions

  1. Membrane voltage difference across membranes (polarized)
    Inside cell more negative and more K+
    Outside cell more positive and more Na+
    Must exist for action potential to occur
  2. the force applied to an object to be lifted when a muscle contracts
  3. Like camera flash system, either it reaches threshold and depolarizes or it doesn't.
  4. A whole muscle contracts with a small or large force depending on number of motor units stimulated to contract
  5. Occurs in absence of oxygen and results in breakdown of glucose to yield ATP and lactic acid; net gain of 2 ATP from glycolysis; supports intense muscle contraction for up to 3 minutes

5 True/False questions

  1. Sliding-filament modelActin myofilaments slides over myosin to shorten sarcomeres, actin and myosin do not change length
    Shortening sarcomeres is responsible for skeletal muscle contraction and during relaxation, sarcomeres lengthen


  2. FasciculusBundle of muscle fibers ensheathed by perimysium


  3. Creatine phosphateDuring resting conditions stores energy to synthesize ATP; provides enough energy to sustain max contractions for about 8-10 seconds


  4. Titinthin myofilaments composed to two strands of fibrous actin (F actin made of G actin units), tropomyosin molecules, and troponin molecules


  5. Psychological fatiguesecond most common, results from ATP depletion