Cardiovascular Physiology Questions

[mymembernames]

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I was wondering if there is a particular place where I can get a few questions (or more) I had about cardio physiology answered for a test coming up this week?

Any help will be greatly appreciated.

 

[Sol Rosenberg]

Go ahead and ask. The worst that will happen is that no one will answer.....

 

[MacchinaDaCaffe]

I've found this site to be helpful in the past with good explanations for a lot of the basics. The tutorial section is especially well done

http://www.cvphysiology.com/

you can always ask questions on this forum if you don't find the answer anywhere else or need further explanation

 

[deedave33]

...

 

[ClockworkDoc]

B - HR and SV up, Decreased total resistance (decreased diastolic bp), increased systolic bp.

 

[Downbytheicu]

I don't know, I might have to go with C on this one: c. Decreased vascular resistance in the exercising arm but increased resistance in the vessels of the rest of the body, with overall increase in total peripheral resistance.

If I remember correctly, the vasculature of muscle is metabolically dominated. I'd choose C over B because there will be metabolic vasodilation in the exercising arm, but an overall sympathetic increase throughout the body. Unless the person is exercising hard enough to have a large epi release to stimulate the intravascular beta-2 receptors, you will have alpha-1 stimulation leading to vasoconstriction in the splanchnic and unused muscular vessels.

 

[ClockworkDoc]

There should be no change in mean blood pressure.

 

[Aphtalyfe]

Late reply... but the answer should be C.

Says isometric which means that the MAP does go up.
During dynamic exercise the MAP doesn't change much. (but even during dynamic its the diastolic remaining pretty stable that enables the MAP to remain relatively constant)

B cannot be right because the diastolic goes UP slightly during dynamic and even more during static.