A&P CH10-11

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  1. involuntary muscles include:
    A) skeletal and smooth muscle
    B) cardiac and skeletal
    C) cardiac and smooth muscles
    C) cardiac and smooth muscles
    (this multiple choice question has been scrambled)
  2. _____ is a muscle that ends conspicuously short of its bony destination, and the gap is bridged by fibrous bands or sheets called a tendon.
    indirect attachment
  3. The bony site of attachment at the relatively stationary end is called its ___
    origin
  4. the attachment site that's more mobile than the origin is called the _____
    insertion
  5. ___ is the muscle that produces most of the force during  a particular joint action
    prime mover (agonist)
  6. _____ is muscle that aids the prime mover.  2 or more _____(same word) acting on a joint can produce more power than a single larger muscle
    synergist, snergists
  7. a____ is a muscle that opposes the prime mover
    antagonist
  8. A ____ holds a muscle still (or prevents it from moving), while another muscle to pull something else.
    flexor (or fixator in her slides)
  9. The ability of the muscle cell to stretch under tension is known as
    A)excitability.
    B)extensibility.
    C)elasticity.
    D)conductivity.
    B)extensibility.
    (this multiple choice question has been scrambled)
  10. The ability of the muscle cell to return to its initial length after being stretched is called
    A)elasticity
    B)extensibility
    C)conductivity
    D)excitability
    A)elasticity
    (this multiple choice question has been scrambled)
  11. when stimulated by chemical signals, stretch, and other stimuli, muscle cells respond with electrical changes across the plasma membrane. 
    This is known as:
    Responsiveness (excitability)
  12. Local electrical change triggers a wave of excitation that travels along the muscle fiber.

    This is known as:
    conductivity
  13. The thick myofilament consists of many molecules of this protein.
    A)myosin
    B)troponin
    C)actin
    D)tropomyosin
    A)myosin
    (this multiple choice question has been scrambled)
  14. The head of myosin attach to actin to form a
    A)sarcomere.
    B)tropomyosin block.
    C)power stroke.
    D)cross-bridge.
    D)cross-bridge.
    (this multiple choice question has been scrambled)
  15. The type of muscle contraction where the muscle contracts but exhibits no change in length is called
    A)eccentric contraction.
    B)concentric contraction.
    C)isotonic contraction.
    D)isometric contraction.
    D)isometric contraction
    (this multiple choice question has been scrambled)
  16. The most efficient means of ATP production is called
    A)aerobic respiration.
    B)phosphagen system.
    C)anaerobic respiration.
    D)substrate level phosphorylation.
    A)aerobic respiration.
    (this multiple choice question has been scrambled)
  17. Which of the following is not relative to muscle strength?
    A)muscle size
    B)fascicle arrangement
    C)temporal summation
    D)endurance
    D)endurance
    (this multiple choice question has been scrambled)
  18. Visceral muscle is also known as
    A)multi-unit smooth muscle.
    B)single-unit smooth muscle.
    C)autorhythmic single-unit smooth muscle.
    D)dense bodies.
    B)single-unit smooth muscle.
    (this multiple choice question has been scrambled)
  19. ____ is when a muscle shortens when stimulated
    contractility
  20. The ability of the muscle cell membrane to respond to stimuli with electric changes is known as ________________.
    A)extensibility
    B)excitability
    C)conductivity
    D)elasticity
    B)excitability
    (this multiple choice question has been scrambled)
  21. The elasticity of skeletal muscle fibers is primarily due to the presence of this protein.
    A)titin
    B)globular actin
    C)collagen
    D)tropomyosin
    E)troponin
    A)titin
    (this multiple choice question has been scrambled)
  22. T tubules are extensions of the ______________ in skeletal muscle.
    A)sarcolemma
    B)sarcoplasmic reticulum
    C)junctional folds
    D)thick filament
    E)cytoskeleton
    A)sarcolemma
    (this multiple choice question has been scrambled)
  23. Which of the following is a regulatory protein of muscle?
    A)titin
    B)actin
    C)myosin
    D)tropomyosin
    D)tropomyosin
    (this multiple choice question has been scrambled)
  24. All of the following are structural components of the neuromuscular junction except
    A)basal lamina.
    B)T tubules.
    C)synaptic bulbs.
    D)junctional folds.
    E)acetylcholine receptors.
    B)T tubules
    (this multiple choice question has been scrambled)
  25. Flaccid paralysis can be caused by
    A)acetylcholinesterase.
    B)pesticides.
    C)cholinesterase inhibitors.
    D)curare.
    D)curare.
    (this multiple choice question has been scrambled)
  26. The resting membrane potential (RMP) for a skeletal muscle cell is
    A)-30mV.
    B)-90mV.
    C)12 V.
    D)1.5mV.
    B)-90mV.
    (this multiple choice question has been scrambled)
  27. After
    the power stroke has occurred during skeletal muscle contraction, what
    must occur in order for the myosin-actin cross-bridge to be released?
    A)Troponin must bind with tropomyosin.
    B)ATP must bind with the myosin head.
    C)Myosin must be dephosphorylated.
    D)Calcium must bind with myosin.
    E)ATP must be cleaved.
    B)ATP must bind with the myosin head.
    (this multiple choice question has been scrambled)
  28. The
    principle that states the force of contraction is dependent on the
    degree of stretch or contraction prior to stimulation is the
    A)muscle tone.
    B)summation principle.
    C)sliding filament theory.
    D)length-tension relationship.
    D)length-tension relationship.
    (this multiple choice question has been scrambled)
  29. Calcium is released from the sarcoplasmic reticulum when an action potential
    opens gated ion channels located in the ________________.
    A)myoglobin
    B)sarcolemma
    C)T tubules
    D)myofilaments
    C)T tubules
    (this multiple choice question has been scrambled)
  30. The time lapse between the beginning of stimulus and the beginning of a twitch is called the
    A)relaxation phase.
    B)contraction phase.
    C)latent period.
    D)refractory period.
    C)latent period.
    (this multiple choice question has been scrambled)
  31. If you attempt to lift a heavy object but it doesn't move, what type of contraction have you performed?
    A)concentric
    B)isometric
    C)isotonic
    D)eccentric
    B)isometric
    (this multiple choice question has been scrambled)
  32. The
    phenomenon occurring when the tension of muscle twitches progressively
    increase as the frequency of stimulus increases is known as
    A)tetany.
    B)threshold.
    C)graded response.
    D)treppe.
    D)treppe.
    (this multiple choice question has been scrambled)
  33. Which of the following statements about slow-twitch muscle fibers is false?
    A)Slow-twitch muscle fibers are fatigue resistant.
    B)Slow-twitch muscle fibers are anaerobic.
    C)Slow-twitch muscle fibers are smaller than fast-twitch fibers.
    D)Slow-twitch muscle fibers have abundant mitochondrion and myoglobin.
    B)Slow-twitch muscle fibers are anaerobic.
    (this multiple choice question has been scrambled)
  34. Fatigue can be caused by all of the following except
    A)low pH in sarcoplasm.
    B)excess of lactic acid.
    C)low acetylcholine supplies.
    D)excess of myoglobin.
    D)excess of myoglobin.
    (this multiple choice question has been scrambled)
  35. Fast-twitch fibers
    A)have more mitochondria.
    B)mainly synthesize ATP by aerobic respiration.
    C)are white.
    D)have a lot of myoglobin.
    C)are white.
    (this multiple choice question has been scrambled)
  36. Smooth muscles
    A)have Z-discs.
    B)lack T-tubules.
    C)contain troponin.
    D)are multinucleate.
    B)lack T-tubules.
    (this multiple choice question has been scrambled)
  37. Fusiform cells are found in which muscle type?
    A)cardiac muscles
    B)smooth muscles
    C)skeletal muscles
    B)smooth muscles
    (this multiple choice question has been scrambled)
Author:
studysuccess
ID:
313949
Card Set:
A&P CH10-11
Updated:
2016-01-24 05:25:11
Tags:
CH10 11
Folders:
A&P CH10-11
Description:
A&P CH10-11
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