Muscle tone. Definition. noun. (1) The muscle in a steady partially contracted state caused by the successive flow of nerve impulses. (2) The amount of tension or resistance to movement in a muscle. Supplement. Muscle tone or tonus helps in maintaining body posture.
Hydronephrosis is the distention of the pelvis and calyces of one or both kidneys, resulting in thinning of the renal tubules because of obstructed urinary flow. When the obstruction is a stone or kink in one of the ureters, only one kidney is damaged.
Best Answer: Ureters are the connecting tube of the kidney and the urinary bladder. The urine originating from the kidney goes through the ureter to reach the urinary bladder. Urinary Bladder is the temporary storage organ of the urine before it goes through the urethra.The urinary bladder will be distended when it is full and forced to be excreted through the urethra. It mean that it can't hold on anymore. Urethra is also a tube, but it is a tube from the urinary bladder to the outside.rinary Bladder is the temporary storage organ of the urine before it goes through the urethra. The urinary bladder will be distended when it is full and forced to be excreted through the urethra. It mean that it can't hold on anymore. Urethra is also a tube, but it is a tube from the urinary bladder to the outside.