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.
Bladder distension is a medical condition in which the bladder is stretched. This is usually due to urinary retention, in which the patient is unable to urinate, but it can be artificially induced by doctors in order to conduct tests for interstitial cystitis. These tests inflate the bladder with water so that the doctor can insert a cytoscope to view the patientâs bladder wall.