Question

The Myosin head pivots towards the M-line during the power stroke of muscle contraction immediately after:...

  1. The Myosin head pivots towards the M-line during the power stroke of muscle contraction immediately after:
  1. ATP binds to the myosin head
  2. ADP and Pi fall of the head
  3. The myosin head hydrolyzes the ATP to ADP and Pi
  4. Calcium binds to troponin
  1. From Smallest to largest, which of the following is in the correct order:
  1. Myofilament, Myofibril, Myofiber
  2. Myofiber, Myofilament, Myofibril
  3. Myofiber, Myofibril, Myofilament
  4. Myofibril, Myofilament, Myofiber
  1. Which of the following is not a component of a thin filament?
  1. Tropomyosin
  2. Actinin
  3. Nebulin
  4. Troponin

4. Where are myofibrils located:

  1. In a Triad
  2. In the Sarcoplasmic Reticulum
  3. In the Sarcoplasm
  4. In a T Tubule

5. Which of the following is not present in a Neuromuscular Junction

  1. Nicotinic Receptors
  2. Synaptic Terminal
  3. T Tubules
  4. Junctional Folds
  5. Motor End-Plate
Science   Anatomy-And-Physiology   
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Answer #1

The Myosin head pivots towards the M-line during the power stroke of muscle contraction immediately after:

c. The myosin head hydrolyzes the ATP to ADP and Pi.

From Smallest to largest, which of the following is in the correct order:

a.Myofilament, Myofibril, Myofiber

Which of the following is not a component of a thin filament?

c.Nebulin

Where are myofibrils located:

c. In the Sarcoplasm

Which of the following is not present in a Neuromuscular Junction

c. T-tubules

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