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27 Cards in this Set
- Front
- Back
Homeostasis
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The Urinary System not only excretes waste but also helps maintain _______ by returning the content of water and other substances in the blood.
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Excretory organs of urinary system
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Lungs
Skin Gastrointestinal tract |
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Major organs of urinary system
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Kidneys
Ureters Urinary bladder Urethra |
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Kidneys
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main organ of urinary system
reddish bean shaped organ |
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Kidney (LOCATION)
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above the waist btwn. peritenium and post. wall of abdomen
right one is slightly lower than the left. |
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Retroperiteneal
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Because their position is post. to the peritoneum of the abdominal cavity, they are said to be ___________.
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Kidney (SIZE)
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10-12 cm
about the size of a bar of soap |
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Kidney (SHAPE)
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medial border faces vertebral column
center of concave border is a deep vertical fissure called a renal hilus |
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Hilus
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deep vertical fissure through which the ureter emerges from the kidney along with blood vessels, lymphatic vessels, and nerves.
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Renal sinus
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The hilus expands into a cavity with the kidneywhich contains part of the renal pelnis, the calyces, and branches of the renal blood vessels and nerves.
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Renal pelvis
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from the major calyces, urine drains into a single large cavity called _____ _____ and then out through the ureter
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External Anatomy of kidneys
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Hilus
Renal sinus Renal pelvis Tissues surrounding kidneys |
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Tissues surrounding kidneys
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Renal capsule
Adipose capsule Renal fasciae |
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Internal anatomy
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Cortex
Medulla Parenchyma of kidney Renal Pelvis |
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Cortex
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Outer cortical zone
Inner juxtamedullary zone Renal columns |
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Outer cortical zone
Inner juxtamedullary zone |
extending from the renal capsule to the bases of the renal pyramids and into the spaces btwn. them
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Renal columns
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spaces btwn renal pyramids
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Medulla
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Renal pyramids
Base Renal papillae |
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Parenchyma of kidney
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cortex
pyramids Nephrons Collecting tubules Papillary ducts Vascular system |
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Parenchyma of kidney
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the renal cortex and renal pyramids of the renal medulla constitute ______ of the kidney
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Nephrons
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filtering unit of kidney
in parenchyma 1 million microscopic structures |
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Collecting tubules
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various straight tubules of the kidney, present in the medulla
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Papillary ducts
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Urine formed by the nephrons drain into large _____ ____, which extend through the renal papillae of the pyramids.
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Renal pelvis
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Outer border - minor calyces and major calyces
Inner portion |
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minor calyces
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(8-18)
receives urine from the papillary ducts of one renal papilla and delivers it to a major calyx |
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major calyces
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(2-3)
urine drains into a single large cavity called the renal pelvis and then out throught the ureter to the urinary bladder. |
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Renal pelvis
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connects to ureters
where urine is collected |