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4. The streptococci bacteria (or Streptococcus agalactiae, Streptococcus pneumoniae, etc.) in the excretory system will cause urinary tract infections (including cystitis). It may occur in women as a result of sexual intercourse.
It is known as group B Streptococcus (GBS).
5. B. a kidney is composed of two parts...
- Each nephron in the kidney is a long tubule, or extremely fine tube, about 30–55 mm (1.2–2.2 inches) long.
- There are three major regions of the kidney: Renal cortex. Renal medulla. Renal pelvis.
- The kidney cannot regenerate new nephrons: the full complement of nephrons for life are established before birth
- The excretory system in humans consists mainly of a pair of kidneys: filter urea and other waste products from the blood, which are then added to the urine within the bladder.
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