Mer Scott
Quiz by , created more than 1 year ago

Describe the gross and microscopic structure of skeletal muscle tissue. • Understand how the form of a skeletal muscle affects its function. • Understand the relationship between skeletal muscle tone and posture.

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Mer Scott
Created by Mer Scott over 7 years ago
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L11 Structure and Function of Skeletal Muscle

Question 1 of 6

1

Which statement about skeletal muscle cells in false?

Select one of the following:

  • They can be up to 40cm in length.

  • They are striated due to protein arrangement.

  • They are cylindrical and aligned in parallel.

  • They can have multiple nuclei.

Explanation

Question 2 of 6

1

Myosin is the thin myofilament, and actin is the thick myofilament.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 6

1

A sarcomere is 2 two micrometres from Z-disk to Z-disk.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 6

1

Choose the statement that is false.

Select one of the following:

  • Longer muscle fibres means a smaller ROM.

  • Muscle fibres can shorten up to 50% in length when contracting.

  • Pennate/oblique muscle fibres have a larger physiological cross sectional area but not a longer anatomical cross sectional area.

Explanation

Question 5 of 6

1

Fibre Type I has enzymatic/metabolic activity and is . It is slow twitching. Marathon runners may have more of this type.
Fibre Type II has enzymatic/metabolic activity and is . It is fast twitching. Usain bolt probably has a lot of this type.

Drag and drop to complete the text.

    high
    aerobic
    low
    anaerobic

Explanation

Question 6 of 6

1

Fitting more fibres into the same space e.g. a pennate arrangement reduces the shortening ability of muscle but increases forces exerted by muscle.

Select one of the following:

  • True
  • False

Explanation

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