Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Question and answer
Q: explain the mechanism of excretion by the lungs, kidney, and skin
A: The lungs are important for excretion of carbon dioxide (the respiratory acid) and there is a huge amount of this to be excreted: at least 12,000 to 13,000 mmols/day. In contrast the kidneys are responsible for excretion of the fixed acids and this [ is also a critical role even though the amounts involved (70-100 mmols/day) are much smaller. The main reason for this renal importance is because
there is no other way to excrete these acids and it should be appreciated that the amounts involved are still very large when compared to the plasma [H+] of only 40 nanomoles/litre. There is a second extremely important role that the kidneys play in acid-base balance, namely the reabsorption of the filtered bicarbonate. Bicarbonate is the predominant extracellular buffer against the fixed acids and it important that its plasma concentration should be defended against renal loss. In acid-base balance, the kidney is responsible for 2 major activities: * Reabsorption of filtered bicarbonate: 4,000 to 5,000 mmol/day * Excretion of the fixed acids (acid anion and associated H+): about 1 mmol/kg/day. Both these processes involve secretion of H+ into the lumen by the renal tubule cells but only the second leads to excretion of H+ from the body. The renal mechanisms involved in acid-base balance can be difficult to understand so as a simplification we will consider the processes occurring in the kidney as involving 2 aspects: * Proximal tubular mechanism * Distal tubular mechanism ]
Get an answer
Original conversation
User: explain the mechanism of excretion by the lungs, kidney, and skin

Weegy: The lungs are important for excretion of carbon dioxide (the respiratory acid) and there is a huge amount of this to be excreted: at least 12,000 to 13,000 mmols/day. In contrast the kidneys are responsible for excretion of the fixed acids and this [ is also a critical role even though the amounts involved (70-100 mmols/day) are much smaller. The main reason for this renal importance is because there is no other way to excrete these acids and it should be appreciated that the amounts involved are still very large when compared to the plasma [H+] of only 40 nanomoles/litre. There is a second extremely important role that the kidneys play in acid-base balance, namely the reabsorption of the filtered bicarbonate. Bicarbonate is the predominant extracellular buffer against the fixed acids and it important that its plasma concentration should be defended against renal loss. In acid-base balance, the kidney is responsible for 2 major activities: * Reabsorption of filtered bicarbonate: 4,000 to 5,000 mmol/day * Excretion of the fixed acids (acid anion and associated H+): about 1 mmol/kg/day. Both these processes involve secretion of H+ into the lumen by the renal tubule cells but only the second leads to excretion of H+ from the body. The renal mechanisms involved in acid-base balance can be difficult to understand so as a simplification we will consider the processes occurring in the kidney as involving 2 aspects: * Proximal tubular mechanism * Distal tubular mechanism ]
Expert answered|IfNotSo|Points 4674|

User: thanks alot!!!!! :-)

Weegy: you're welcome
Expert answered|IfNotSo|Points 4674|

Question
Asked 10/6/2010 7:52:42 AM
Updated 6/30/2011 4:37:41 AM
2 Answers/Comments
New answers
Rating

There are no new answers.

Comments
useless
Added 6/30/2011 4:37:12 AM
useless
Added 6/30/2011 4:37:12 AM
such a fudu ans
Added 6/30/2011 4:37:41 AM
Add an answer or comment
Log in or sign up first.
26,440,444 questions answered
Popular Conversations
What is the solution to the proportion? n/18 = 5/9 A. n = 2.5 B. n ...
Weegy: n/18 = 5/9; 9n = 5 * 18 9n = 90 n = 90/9 n = 10
10/12/2017 10:59:55 AM| 8 Answers
Which of the following has kinetic energy? a. a rock poised for a ...
Weegy: A bow that is drawn back by an archer. B. Has kinetic energy.
10/10/2017 2:00:05 PM| 3 Answers
In which one of the following sentences is a word misspelled? ...
Weegy: The sentence with a spelling mistake is: User: Which of the following is an example of an imperative sentence? ...
10/9/2017 8:45:54 AM| 2 Answers
Which of the following about the double-exposition concerto form is ...
Weegy: The development avoids the tonic is TRUE about the double-exposition concerto form. User: The first section ...
10/9/2017 11:33:19 AM| 2 Answers
In which sentence is the underlined phrase an adjective ...
Weegy: The sentence with an adjective clause is: User: . In which sentence is the underlined clause an adjective ...
10/10/2017 11:55:36 AM| 2 Answers
What country is John Hus from?
10/11/2017 11:05:31 AM| 2 Answers
The two infinitive functions are adjectives and noun. true or faslse
Weegy: The two infinitive functions are adjectives and noun. TRUE.
10/11/2017 11:35:51 AM| 2 Answers
Weegy Stuff
S
P
P
L
P
P
P
Points 137 [Total 2029] Ratings 11 Comments 27 Invitations 0 Online
S
P
L
Points 97 [Total 119] Ratings 0 Comments 97 Invitations 0 Offline
S
Points 63 [Total 63] Ratings 4 Comments 23 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
L
Points 1 [Total 100] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.