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.
Definition - Indwelling Catheters. A catheter is used for two common medical problems: urinary incontiinence (UI) and urinary retention. Transurethral indwelling catheterization or urinary catheterization is defined as passage of a catheter into the urinary bladder via the urethra (urethral catheter). Transurethral indwelling catheterization is also called urethral catheterization. In this site we only use the term urethral catheterization.