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Author Question: Muscle contraction occurs when the myosin cross bridges row along the length of the ______ ... (Read 78 times)

moongchi

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on: Jun 22, 2018
Muscle contraction occurs when the myosin cross bridges row along the length of the ______ filaments.
 
  a. myosin
  b. actin
  c. intrafusal
  d. extrafusal
  e. myofibril

Question 2

The presence of dark stripes in skeletal muscles is due to
 
  a. the presence of blood vessels within the muscle fibers.
  b. thickened membranes at the neuromuscular junctions.
  c. variations in myelin coating of the muscle fibers.
  d. overlapping segments of actin and myosin filaments.
  e. alternating motor units.


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momolu

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Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: b. actin

Answer to Question 2

Answer: d. overlapping segments of actin and myosin filaments.


moongchi

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Reply 2 on: Jun 22, 2018
Thanks for the timely response, appreciate it

debra928

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Reply 3 on: Yesterday
Excellent

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