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.
Abdominal distention: It is the abdomen, not the stomach, that is swollen in some patients with advanced ovarian cancer. This is mainly due to accumulation of fluid (called ascites) within the abdomen. The fluid over time causes distention of the abdomen (just like what you would see in a pregnant women).