8730066
Description
Question 1
Question
Which statement about skeletal muscle cells in false?
Answer
-
They can be up to 40cm in length.
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They are striated due to protein arrangement.
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They are cylindrical and aligned in parallel.
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They can have multiple nuclei.
Question 2
Question
Myosin is the thin myofilament, and actin is the thick myofilament.
Answer
- True
- False
Question 3
Question
A sarcomere is 2 two micrometres from Z-disk to Z-disk.
Answer
- True
- False
Question 4
Question
Choose the statement that is false.
Answer
-
Longer muscle fibres means a smaller ROM.
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Muscle fibres can shorten up to 50% in length when contracting.
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Pennate/oblique muscle fibres have a larger physiological cross sectional area but not a longer anatomical cross sectional area.
Question 5
Question
Fibre Type I has [blank_start]high[blank_end] enzymatic/metabolic activity and is [blank_start]aerobic[blank_end]. It is slow twitching. Marathon runners may have more of this type.
Fibre Type II has [blank_start]low[blank_end] enzymatic/metabolic activity and is [blank_start]anaerobic[blank_end]. It is fast twitching. Usain bolt probably has a lot of this type.
Answer
-
high
-
aerobic
-
low
-
anaerobic
Question 6
Question
Fitting more fibres into the same space e.g. a pennate arrangement reduces the shortening ability of muscle but increases forces exerted by muscle.
Answer
- True
- False
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