ANIMAL PHYSIOLOGY
OSMOREGULATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Be more dilute
|
|
|
Be more concentrated
|
|
|
Have a larger volume
|
|
|
All of the above
|
Detailed explanation-1: -The brain releases a substance called antidiuretic hormone (ADH), which makes the kidneys release less water and reduces the volume of urine generated. The body makes less pee when its ADH level is high. A low level causes more urine to be produced.
Detailed explanation-2: -ADH administration. Receiving antidiuretic hormone (ADH), which should cause the urine to become concentrated.
Detailed explanation-3: -When there are osmotic challenges or temperature changes, urine composition and/or concentration can change: Sweating – this causes dehydration as you lose water. Hence, more ADH is released to increase water reabsorption so you excrete more concentrated urine.
Detailed explanation-4: -Maximum concentration occurs at the bottom of the loop. The ascending limb of the nephron loop is impermeable to water, but Na + and Cl – are pumped out into the surrounding fluids by active transport. As fluid travels up the ascending limb, it becomes less and less concentrated because Na + and Cl – are pumped out.