fast vs slow twitch

Question 1

fast twitch

Answer 1

• used during sprinting
• contracts and relaxes rapidly
• whitish in colour
  -contain fewer blood vessels (capillaries) as they are less reliant on aerobic respiration so less reliant on oxygen provided
• lower density of mitochondria as they are less reliant of aerobic respiration and use glycogen

Question 2

slow twitch

Answer 2

• endurance
• contracts slower and for a longer period of time
• redder in colour
• contain alot of blood vessels
• high capillary density which provided a large and continous supply of oxygen
  -high density of mitochondria as they rely on aerobic respiration
  -small glycogen stores as capillary brings in glucose and oxygen so more glycogen not needed

Question 3

what type of respiration does fast twitch use

Answer 3

• anaerobic respiration
• as there is a lower density of mitochondria and blood vessels as little oxygen is needed
• generate ATP through glycolosis

Question 4

what type of respiration does slow twitch use

Answer 4

aerobic - higher density of mitochondria and blood vessels to supply oxygen
ATP is used to store the levels creatine phosphate

Question 5

glycogen use

Answer 5

-fast twitch stores high glycogen
- slow twitch stores low glycogen