Exercise

Pregunta	Respuesta
What are muscles made of?	Muscle cells
Where do muscles get their energy?	Glucose
What do muscles use energy for?	To contract the muscle
What does an increase of muscle activity require?	More glucose and oxygen
What needs to be removed from muscle cells?	Carbon dioxide
What 2 short term effects does exercise have on the body and why?	1) Increased breathing rate to meat the increased demand for oxygen 2) Increased heart rate to help circulate oxygen and to take CO2 away
What substance is some of the glucose from food stored as?	Glycogen
Where is glycogen stored?	Mainly in the liver but each muscle has it's own store
What happens to some glycogen during vigorous exercise and why?	Some of the glycogen can get converted back into glucose as muscles can use up glucose quickly so it replaces the used up glucose
When does anaerobic respiration happen?	When there isn't enough oxygen present
What does "anaerobic" mean?	"Without oxygen"
What is the word equation for anaerobic respiration?	Image: c71c832c-fa6a-4cca-b125-60648ca9b342 (image/png)
Why isn't anaerobic respiration the best form of respiration (3 reasons)?	1) Because it produces lactic acid which is painful 2) It causes muscle fatigue 3) It doesn't produce as much energy as aerobic respiration
Give one upside to anaerobic respiration.	It is good in emergencies.
What does anaerobic respiration result in?	Oxygen debt
What is oxygen debt?	The need to increase the amount of oxygen available to your muscles as they were deprived of enough oxygen earlier
What physical affect does oxygen debt have on your body?	It means that you have to keep breathing hard for a long time after exercise
What does lactic acid get converted into when it gets oxidised?	CO2 and water
Why does your breathing rate and pulse stay high after exercise (excluding oxygen debt)?	The brain detects high levels of CO2 and lactic acid

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	Creado por francesca graham hace más de 8 años