AnaidaMD wrote:
C) is out bc with standing --> CO decreases , so im thinking with standing exerc. CO is lower versus supine exerc.
B) exerc. training---> HR is lowered ??
D) dynamic exerc--> more effort and im thinking more SV( w muscular activity even more there no blood pooled in periph. veins---> even more incr in VR hence more incr. in SV), so i guess CO is higher with dynamic versus static exerc.
My answer is Answer A)
A. Agree. Not sure it is true. Others look like wrong answer to me.
|
| AnaidaMD
Forum Newbie
Topics: 1
Posts: 4
|
whas the answer goodgirl?
|
| GoodGirl
_____________
Topics: 88
Posts: 1,175
|
Yes, the correct is A. 
The correct answer is “a” because the
maximal rate of sinoatrial node firing decreases
with age, and stroke volume decreases
because of a decline in inotropic
responsiveness and decreased ventricular
compliance. Choice “b” is incorrect because
exercise training does not significantly
change maximal heart rate, although
it improves inotropic responses.
Choice “c” is incorrect because body posture
does not significantly affect maximal
cardiac output, although it influences the
relative changes in heart rate and stroke
volume. Choice “d” is incorrect because
static exercise, unlike dynamic exercise,
does not enhance venous return by the
muscle pump.
___________________
*Never argue with a fool, people might not know the difference* PRIORITIZE & SIMPLIFY. Do or do not, there is no 'try'.
|
|
| |
| | | | 
