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Human Excretory System

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Human Excretory System - Lesson Summary

The human excretory system consists of a pair of kidneys, a pair of ureters, a urinary bladder and the urethra.  The kidneys are compact, bean-shaped organs on either side of the spinal cord in the lower back.

Nephrons are the functional units of a kidney.

Ureters carry urine from the renal pelvis of the kidneys to the urinary bladder. The urinary bladder temporarily stores urine till it is released from the body. Urine leaves the urinary bladder via the urethra.

Nephron: it is the functional unit of the kidney and consists of two parts.  1. The glomerulus and
2. The renal tubule.

Malphigian corpuscle: The glomerulus along with the bowmans Capsule is termed as Malphigian corpuscle.

Renal papilla: The tip of medullary pyramids in the kidney where the urine is emptied into the calyx is called renal papilla.

Urethral sphincter: The set of muscles which control the flow of urine from the urinary bladder to the outside.


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