Is applied a muscle fibre will contract completely 14. Fill in the following chart regarding different types of muscle fibres: Type of # of Myoglobin Surrounded Source of Type of What Fibre: mitochondria present? by many energy contraction: muscle fibre ( many/ few) capillary storage: is best used beds? for: Many Yes a lot Yes Glycogen Slow but Endurance, Fast Twitch and Fat long term sustained (Type I) activity Slow Twitch Few Little to no No Glycogen Fast but Power and ( Type II) myoglobin only short term quick exertions Intermediate Few More No Glycogen Fast but Can be used Form myoglobin only longer term for longer (Type III) than type II than type II activities
Is applied a muscle fibre will contract completely 14. Fill in the following chart regarding different types of muscle fibres: Type of Fibre: # of mitochondria ( many/ few) Myoglobin present? Surrounded by many capillary beds? Source of energy storage: Type of contraction: What muscle fibre is best used for: Fast Twitch (Type I) Many Yes a lot Yes Glycogen and Fat Slow but long term Endurance, sustained activity Slow Twitch ( Type II) Few Little to no myoglobin No Glycogen only Fast but short term Power and quick exertions Intermediate Form (Type III) Few More myoglobin than type II No Glycogen only Fast but longer term than type II Can be used for longer activities
review_of_muscles_and_movement_key.docx