Types of Muscle Fibres

Types of Muscle Fibres

Proportions of the two types of muscle fibre vary from muscle to muscle and person to person.

Slow Twitch Fibres:

• Contract more slowly and with less force
• Sustained contraction is more important than rapid contraction in this type of fibre
• It is called red muscle
  •  due it containing many myoglobin
  • a molecule that stores oxygen and gives it a red colour
• More mitochondria are present for aerobic respiration and there is a much more dense capillary network
• Store of glycogen are present to release glucose for aerobic respiration
• Slow twitch muscle is responsible for prolonged contractions…