SKELETAL MUSCLE

SKELETAL MUSCLE - SKELETAL MUSCLE Skeletal Muscle The...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 SKELETAL MUSCLE SKELETAL MUSCLE Skeletal Muscle The Muscle Fiber o an individual muscle cell is called a muscle fiber o a muscle fiber is enclosed by a membrane called the sarcolemma | each muscle fibre contains 100s to 1000s of myofibrils | myofibrils are the contractile units of muscles http://www.youtube.com/watch?v=Vlchs4omFDM&feature=related
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MUSCLE FIBRE TYPES | Type I or slow oxidative fibres | Type IIa or fast oxidative glycolytic fibres | Type IIb or fast glycolytic fibres Human Skeletal Muscle Fibre Types Low Moderate High Fatigue resistance Low Moderately high High Oxidative capacity High High Low Glycolytic capacity High High Low Force Fast Fast Slow Contraction speed Large Large Small Fibre size Fast Twitch (FTb or Type IIb) Fast Twitch (FTa or Type IIa) Slow Twitch (Type I) Characteristics Average human : 50% ST and 50% FT of which about 25% FTa and 25% FTb. Sprinters – 60-75% FT and 25 to 40% ST,
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

SKELETAL MUSCLE - SKELETAL MUSCLE Skeletal Muscle The...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online