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Also known as the urinary system.
Excretory System Also known as the urinary system.
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I. Organs A. Kidneys- retroperitoneal (behind the peritoneum)
B. Bladder- reservoir for urine, rugae allow expansion. C. Ureters- tubes that convey urine from the kidneys to the bladder. D. Urethra- tube that conveys urine from the bladder to the outside of the body.
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Structures of urinary tract
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II. Structure of the kidneys
A. Renal cortex- outer portion of the kidneys where the nephrons are located. B. Renal medulla- composed of pyramids, cone shaped funnels. C. Renal pelvis- funnel shaped sac with calyces. These direct urine from all areas of the kidneys.
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Detail of kidney
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D. Nephron- the functional unit
1. Renal corpuscle- a. glomerulus- network of capillaries that surround the… b. Capsule of Bowman- selective filtration occurs. 2. Renal tubule- a. proximal convoluted tubule. b. loop of Henle c. distal convoluted tubule
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Glomerulus
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Renal tubule
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III. Physiology of the kidneys
A. Glomerulus- water and true solutes are filtered out of the blood and returned to the body. B. Tubular reabsorption- occurs in renal tubules. A counter current mechanism allows waste materials to be removed while substances needed by the body are retained.
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Nephron
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IV. Medical problems B. Hematuria- blood in the urine.
A. Diuresis- increased secretion of urine. B. Hematuria- blood in the urine. C. Hemodialysis- artificial kidney.
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Artificial kidney
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Get Smart Body.com KIDNEY TUTORIALS FOUND ON WEBSITE ARE: GROSS EXTERNAL ANATOMY GROSSS INTERNAL ANATOMY HISTOLOGY OF THE CORTEX REGION HISTOLOGY OF THE MEDULLA REGION
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