KEPERAWATAN MEDIKAL KEPERAWATAN MEDIKAL BEDAH 3BEDAH 3

SISTEM SISTEM PERKEMIHANPERKEMIHAN

Female urinary tract Female urinary tract

Male urinary tract

ANATOMI FISIOLOGIANATOMI FISIOLOGI

ANATOMI FISIOLOGIANATOMI FISIOLOGI

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KIDNEY Approximately one million nephrons (right)

compose each bean-shaped kidney (left). The filtration unit of the nephron, called the glomerulus, regulates the concentration within the body of important substances such as potassium, calcium, and hydrogen, and removes substances not produced by the body such as drugs and food additives.

The filtrate, urine, leaves the nephron through a long tubule and collecting duct. Chemical signals triggered by the body’s need for water and salt cause the walls of the tubule to become more or less permeable to these substances, which are reabsorbed accordingly from the urine.

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BLADDER

The bladder is a muscular storage organ for urine produced by the kidneys. The average adult bladder can hold about half a litre (1 pt) of liquid.

Urine exits the bladder through a tube called the urethra. Emptying the bladder is a reflex reaction, one that takes children several years to learn to control.

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