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Cards In This Set
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Kidneys
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Perhaps more than any other body system, kidneys help maintain the constant chemical and fluid balance that we call homeostasis.
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Outermost layer of the kidney
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A tough, fibrous outer capsule holds each kidney together
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Cortex
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The layer just under the capsule
Beneath the cortex the kidney is in sections
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Medulla
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Inner part made up of pieshaped wedges
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Pyramids
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Pie shaped wedges found in the medulla
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Papillae
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Points of the Pyramids
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Calyx
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Each papilla points into a cup shaped opening called the calyx
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Renal Pelvis
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Each calyx sends drops of urine into the urine pelvis which links to the ureter to the bladder to the urethra
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Structural or working unit of the kidney
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Nephron
Found in the renal cortex and extend into the medulla
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Nephron
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Each nephron is a tiny filter and purifier.
They filter and clean the blood, discard excess water and wastes, and keep what the body needs for homeostasis.
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Blood flow to the nephron
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Capillaries carry blood to each nephron
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Nephron is made up of:
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A glomerulus and a tubule
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Glomerulus
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A tangled ball of capillaries held together by a membrane called the bowman's capsule.
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Capillary walls in the glomerulus
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Semipermeable membranes: has pores that let small substances pass through, but keep in blood cells and larger molecules, like proteins.
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Afferent
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Toward the organ (or the center)
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