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.
3 doctors agreed: Dilatation: Caliectasis is a dilatation of the kidneys' urine collecting tubes within the kidney itself. It can reflect some degree of obstruction, infection, or reflux of urine from the bladder to the kidney. Stasis of urine in the upper ureter has a similar list or possible causes. ...Read more.