Bowman's Capsule Question

[LetsGetSocial]

---

Members don't see this ad.

The above normal hydrostatic pressure in Bowman's capsule would result in:
a) Filtration increase in proportion to the increase in Bowman's capsule pressure
b) Osmotic pressure compensating, so that filtration does not change
c) Net filtration increases above normal
d) Net filtration decreases below normal
e) No effect on filtration rate

Hi guys, this question is from Sterling Biology, and the answer they say is D (with no explanation) but that doesn't really make sense to me. Wouldn't increase in hydrostatic pressure result in more solutes being filtrated and net filtration increases? Do you guys think it's an error in the book?

Thanks~!

 

[embrojam]

Don't confuse Bowman's capsule with glomerular capillaries. Inc pressure in Bowman's capsule would lower filtration. Inc pressure in the glomerular capillaries would increase filtration

 

[LetsGetSocial]

Don't confuse Bowman's capsule with glomerular capillaries. Inc pressure in Bowman's capsule would lower filtration. Inc pressure in the glomerular capillaries would increase filtration

Oh right, because the filtrate goes from Glomerulus -> Bowman's Capsule so if the pressure is high in the latter it wouldn't want to diffuse...That makes sense, thanks.

Another one that I wasn't not sure of:

Which statement most accurately describes the expected levels of aldosterone and vasopressin in the blood of a dehydrated patient compared to a healthy individual?
a) Aldosterone levels are higher, and vasopressin levels are lower.
b) Aldosterone levels are lower, and vasopressin levels are higher.
c) Aldosterone and vasopressin levels are higher.
d) Aldosterone and vasopressin levels are lower.
e) Aldosterone and vasopressin levels are not related.

The answer is C, but shouldn't it be D? If a person is dehydrated, wouldn't that be indicative of the person not reabsorbing enough water back in (i.e. lower aldosterone and vasopressin levels?)

Thanks~!

 

[embrojam]

I don't think they're assuming the levels which caused the condition. Just imagine a person hadn't had a drink in awhile. Aldosterone would be higher (preserves salts which inc water retention). Vasopression (ADH) would be higher to pressure water.

 

[LetsGetSocial]

I don't think they're assuming the levels which caused the condition. Just imagine a person hadn't had a drink in awhile. Aldosterone would be higher (preserves salts which inc water retention). Vasopression (ADH) would be higher to pressure water.

That makes sense again 🙂 Thank you for your help!

 

[embrojam]

That makes sense again 🙂 Thank you for your help!

No problemo!