8730066
Descripción
Pregunta 1
Pregunta
Which statement about skeletal muscle cells in false?
Respuesta
-
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.
Pregunta 2
Pregunta
Myosin is the thin myofilament, and actin is the thick myofilament.
Respuesta
- True
- False
Pregunta 3
Pregunta
A sarcomere is 2 two micrometres from Z-disk to Z-disk.
Respuesta
- True
- False
Pregunta 4
Pregunta
Choose the statement that is false.
Respuesta
-
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.
Pregunta 5
Pregunta
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.
Respuesta
-
high
-
aerobic
-
low
-
anaerobic
Pregunta 6
Pregunta
Fitting more fibres into the same space e.g. a pennate arrangement reduces the shortening ability of muscle but increases forces exerted by muscle.
Respuesta
- True
- False
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