Top answers

What precisely is autoregulation in the kidney? Is it solely the ability to vary the diameters of the afferent and efferent arterioles? If so how is this controlled?

Autoregulation is the ability of any vascular bed to maintain its capillary blood supply/perfusion pressure fairly constant despite changes in mean (systemic) arterial pressure. Autoregulatory control must b...
SM
Answered by Steffi M. • Biology tutor
4442 Views

How do I approach an unseen poem?

It is very important to remember when analysising an unseen poem that is NOT PROSE. This means the tools that you apply to the text must take into account the differences between the two. To make sure you di...
TS
5771 Views

How do you form the imperfect tense in Spanish?

The imperfect tense is used in Spanish to describe something in the past or to talk about something that happened often or habitually, for example going to school every day. It has two different types of end...
DM
Answered by Danielle M. • Spanish tutor
4663 Views

What is the difference between por and para?

Early on in your Spanish studies para is used much more than por, but the more advanced that your writing and speaking becomes the more you need to know to distinguish between the two! Para is most commonly ...
DM
Answered by Danielle M. • Spanish tutor
3652 Views

How do you revise for Spanish exams?

A key thing to remember is that with languages it's impossible to cram everything you know in one go because it's a long process of building up your knowledge of vocabulary and grammar in order to give you t...
DM
Answered by Danielle M. • Spanish tutor
4108 Views