Questions about the kidney

[gotquestions]

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What gets absorbed, secreted, reaborbed at the distal and proximal convoluted tubules?

What does reaborb mean, such as more Na+ is reabosorbed along with water when aldosterone is present?

What is ADH and where does it come from?

Finally what is diabetes (mellitus, insipidus, and others)?

 

[rycetrix]

What gets absorbed, secreted, reaborbed at the distal and proximal convoluted tubules?

In the proximal convoluted tubule, Na+ anions, and water initially get absorbed into the body (diffused through the walls of the tubule) while K+ and Ca2+ stay initially in the tubule (secreted). In the descending loop of Henle, more water gets absorbed into the body. In the ascending loop of Henle, more ions get absorbed and in the distal convoluted tube, secretion of excess Ca2+, K+ (K+ secretion is regulated by Na+/K+ pump), and H+ (increase pH...which is why your urine is acidic).

What does reaborb mean, such as more Na+ is reabosorbed along with water when aldosterone is present?

Aldosterone is a hormone that increases Na+ and water absorption. This acts mostly on the distal tubule and the collecting duct to conserve sodium and water in your body.

What is ADH and where does it come from?

ADH = Antidiuretic Hormone (vasopressin) which is made in the hypothalamus and secreted from the posterior pituitary. It is a hormone which causes water to diffuse through the collecting duct to reabsorb water into the body. This prevents you from having to go to the bathroom so often and makes sure your body is hydrated.

I am not sure if my answers are completely correct and I am too tired to answer the question about diabetes. Someone can fill you in on that or you can just look at wikipedia

 

[Okie7123]

All easily looked up in your physiology book.

Definitely not discussing the many intricacies of diabetes here. But these are the origins

Insipidis = Pituitary damage
Mellitis Type 1 = Beta cell destruction in pancreas
Mellitis Type 2 = Insulin resistance

But seriously, reading hardly 2 pages would answer your kidney problems (and a lot faster than posting and waiting for SDN replies).

 

[Passion4Sci]

Another shining example of someone who is going to be an excellent, ambitious pharmacist.

 

[BlueCosmos]

agreed.

 

[DrWrong]

Another shining example of someone who is going to be an excellent, ambitious pharmacist.

Quoted For Truth!