A complete handbook for the sanitary troops of the U S army and navy . Fig. 4 —? Section of the Kidney. A,Corlex\B,medulla; C, pelvis; D, ureter. THE EXCRETORY APPARATUS 87 The urethra is eight or nine inches long and extends from theneck of the bladder to the meatus: when the penis is held up thatportion of the urethra under the pubis describes a curve with theconcavity upward, hence the curved shape of catheters and sounds. Urine is a watery solution of urea, uric acid, coloring matter, andsalts, mostly urates, phosphates, carbonates, and chlorides. The MulC- iriani. Prosta teqiarui CLlanS F
A complete handbook for the sanitary troops of the U S army and navy . Fig. 4 —? Section of the Kidney. A,Corlex\B,medulla; C, pelvis; D, ureter. THE EXCRETORY APPARATUS 87 The urethra is eight or nine inches long and extends from theneck of the bladder to the meatus: when the penis is held up thatportion of the urethra under the pubis describes a curve with theconcavity upward, hence the curved shape of catheters and sounds. Urine is a watery solution of urea, uric acid, coloring matter, andsalts, mostly urates, phosphates, carbonates, and chlorides. The MulC- iriani. Prosta teqiarui CLlanS Fig. 42.— Section of Bladder and Urethra. average man passes about fifteen hundred cubic centimeters or threepints of urine a day, and this urine contains about fifty grammes orone and one-half ounces of solids. Normal urine is yellowish incolor, acid in reaction, and has a specific gravity of from 1015 to1025. The urea is the most important constituent, a little more thanan ounce being excreted daily. Healthy urine when passed is ordinarily clear, but it may quicklybecome cloudy and a sediment form without indicating disease. Hsuch cloudiness disappears when the urine is heated it is due to 88 AND PHYSIOLOGY urates; if the cloudiness disappears on the addition of a few dropsof acid it is due to phosphates. Among abnormal constituents of the urine, indicating disease, arealbumin, sugar, bile, blood, and pus. Just above the kidney on each side is a small triangular ductlessgland known as the suprarenal gland. It has nothing to do with theexcretion of u
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