The excretion of urine from the urinary bladder by contraction and relaxation of smooth muscles of the bladder is known as micturition. When urine accumulates in the urinary bladder, a voluntary signal passes out from the CNS which leads to the excretion of urine. Accumulation of urine leads to the passage of signals from stretch receptors to CNS by which the motor neuron initiates the contraction and relaxation of smooth muscle and release of urine. On average a healthy adult can excrete 1 to 1.5 liters of urine per day.
Answered by Abhisek | 1 year agoFill in the gaps:
(a) Ascending limb of Henle’s loop is ______ to water whereas the descending limb is _______ to it.
(b) Reabsorption of water from distal parts of the tubules is facilitated by hormone _______.
(c) Dialysis fluid contain all the constituents as in plasma except _______.
(d) A healthy adult human excretes (on an average) _______ gm of urea/day
Name the following:
1. A chordate animal having flame cells as excretory structures.
2. Cortical portions projecting between the medullary pyramids in the human kidney.
3. A loop of capillary running parallel to Henle’s loop.
What is the significance of juxtaglomerular apparatus(JGA) in kidney function?
Terrestrial animals are generally either ureotelic or uricotelic, not ammonotelic, why?
What is meant by the term osmoregulation?