A
AUSRA
Guest
Hello everyone,
I'd like some insight on a few questions that I have to do for my Biology class. They are more like second questions attached to the primary questions. The first asks:
"What makes Lance Armstrong such an exceptional athlete compared to an average man his age? Compare the performance of his heart to that of an average man's."
I answered:
"Because Lance Armstrong has a 30% larger heart than an average man, he is able to be the exceptional athlete that he is. Armstrong's heart beats about 32 times per minute while at rest, while the average man's heart beats 70 times per minute while at rest. When he is cycling, his heart rate can exceed 200 beats per minute, while the average, healthy man's heart beats 150 beats per minute during exertion."
The accompanying question is: "How might this explain why Lance Armstrong won seven consecutive Tour de France races?"
The second question is:
"During extreme muscle activity, how much of cardiac output does muscle blood flow account for?"
I answered:
"Muscle blood flow accounts for 80-85% of cardiac output."
The accompanying question asks: "How might this affect other organs during exercise?"
The final question is:
"How does your liver change with age?"
I answered:
"As we grow older and our metabolic processes slow down, the liver decreases in size."
The accompanying question asks: "What implications might this have for an older person?"
Thank you to anyone who could provide me with some insight. Your help is greatly appreciated!
I'd like some insight on a few questions that I have to do for my Biology class. They are more like second questions attached to the primary questions. The first asks:
"What makes Lance Armstrong such an exceptional athlete compared to an average man his age? Compare the performance of his heart to that of an average man's."
I answered:
"Because Lance Armstrong has a 30% larger heart than an average man, he is able to be the exceptional athlete that he is. Armstrong's heart beats about 32 times per minute while at rest, while the average man's heart beats 70 times per minute while at rest. When he is cycling, his heart rate can exceed 200 beats per minute, while the average, healthy man's heart beats 150 beats per minute during exertion."
The accompanying question is: "How might this explain why Lance Armstrong won seven consecutive Tour de France races?"
The second question is:
"During extreme muscle activity, how much of cardiac output does muscle blood flow account for?"
I answered:
"Muscle blood flow accounts for 80-85% of cardiac output."
The accompanying question asks: "How might this affect other organs during exercise?"
The final question is:
"How does your liver change with age?"
I answered:
"As we grow older and our metabolic processes slow down, the liver decreases in size."
The accompanying question asks: "What implications might this have for an older person?"
Thank you to anyone who could provide me with some insight. Your help is greatly appreciated!