Trigger finger is caused by inflammation of the synovium, enlargement of the tendon, and thickening or narrowing of the sheath itself, usually in the area of the palm closest to the fingers. The name of the tendon sheath in this area is the âA1 pulleyâ.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  isotonic(Adjective) having the same osmotic pressure. 2  isotonic(Adjective) Having the same concentration of solutes as human blood. Use an isotonic saline solution in your neti pot to prevent irritation of your nasal passages. 3  isotonic(Adjective) having equal tension.
Hypertonic Definition. HYPERTONIC solution: has higher concentration of solute than the cell, water diffuses out and the cell shrivels HYPOTONIC solution: has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and could burst. ISOTONIC solution: has the same concentration of solute as the cell so water diffuses in and out evenly