What roles do hormones play in human reproduction and the menstrual cycle?
What roles do hormones play in human reproduction and the menstrual cycle?

What roles do hormones play in human reproduction and the menstrual cycle?
What roles do hormones play in human reproduction and the menstrual cycle?
What is oxygen debt, and how does the body use extra oxygen after exercise to remove lactic acid?
What role does the liver play in converting lactic acid back into glucose?
How does blood flow through the muscles help manage lactic acid after exercise?
Why do muscles become fatigued and stop contracting efficiently during long periods of vigorous activity?
What is oxygen debt, and how does it relate to lactic acid buildup during exercise?
How does anaerobic respiration lead to the buildup of lactic acid in muscles?
What happens when insufficient oxygen is supplied to muscles during exercise?
What changes occur in heart rate, breathing rate, and breath volume during exercise, and why?