Question and answer
explain the mechanism of excretion by the lungs, kidney, and skin
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.
17,893,320 questions answered
Popular Conversations
3x+3/18x= User: 10x+3/=
Weegy: this is quite simple, if you read over the question a few times and learn the tendencies. One number is ten ...
10/20/2014 5:27:08 PM| 5 Answers
Choose the product. -7p3(4p2 + 3p - 1)
Weegy: -7p3(4p2 3p - 1) = 7p3 - 84p6. Source: User: Find the quotient. 42j4k2 ÷ (-3j3k) Weegy: = 42j k /- 3j k) = ...
10/19/2014 5:43:50 PM| 3 Answers
Describe the key differences between managing and leading.
Weegy: ]
10/19/2014 5:51:01 PM| 3 Answers
Find the sum and choose the correct answer. 2n3 + 4n2 - 7 and -n3 + ...
Weegy: (2 n^3+4 n^2-7)+(-n^3+8 n-9) your answer is n^3+4 n^2+8 n-16 User: Select the correct difference. -3z7 - ...
10/19/2014 5:41:21 PM| 2 Answers
Weegy Stuff
S
L
1
1
1
1
L
1
L
Points 2160 [Total 14535]| Ratings 0| Comments 2160| Invitations 0|Offline
S
L
1
L
P
C
1
P
C
1
L
Points 1393 [Total 10874]| Ratings 3| Comments 1363| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 745 [Total 12974]| Ratings 0| Comments 745| Invitations 0|Offline
S
L
Points 450 [Total 1849]| Ratings 0| Comments 450| Invitations 0|Offline
S
1
L
L
Points 447 [Total 6241]| Ratings 3| Comments 417| Invitations 0|Offline
S
Points 401 [Total 401]| Ratings 0| Comments 371| Invitations 3|Offline
S
Points 297 [Total 298]| Ratings 3| Comments 267| Invitations 0|Online
S
Points 180 [Total 180]| Ratings 1| Comments 170| Invitations 0|Offline
S
P
C
L
P
L
1
Points 48 [Total 6282]| Ratings 0| Comments 48| Invitations 0|Offline
S
Points 27 [Total 27]| Ratings 0| Comments 27| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.