Tuba section in a British style brass band. Tubas are found in various pitches, most commonly in F, E â­ , C, or B â­ . The main tube of a B â­ tuba is approximately 18 feet (5.5 m) long, while that of a C tuba is 16 feet (4.9 m), of an E â­ tuba 13 feet (4.0 m), and of an F tuba 12 feet (3.7 m). The instrument has a conical bore, meaning the bore diameter increases as a function of the tubing length from the mouthpiece to the bell.
The total body water is divided into intracellular and extracellular fluids. Plasma is considered __.
In Netter's Atlas of Human Physiology, body water is broken down into the following compartments: 1  Intracellular fluid (2/3 of body water). 2  Extracellular fluid (1/3 of body water). 3  Plasma (1/5 of extracellular fluid). 4  Interstitial fluid (4/5 of extracellular fluid). 5  Transcellular fluid (a.k.a. third space, normally ignored in calculations). 6  Contai