Anatomy and histology of the kidney Flashcards
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The kidneys are relatively in a fixed position. However, movement of the kidneys occur when?
During respiration and when changing from the supine to the erect position, and vice versa
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The renal fascia is continuous with the fascia on the interior surface of the diaphragm (diaphragmatic fascia); thus, the primary attachment of the suprarenal glands is to which organ?
Diaphragm
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Kidneys are retroperitoneal. T/F
T
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The kidneys are at which vertebral level?
T12-L3
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The concave medial margin of each kidney is a vertical cleft called what?
Renal hilum
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The renal hilum is the entrance to a space within the kidney called what?
Renal sinus
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Which is located lower: the right or left kidney?
Right
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Why is the right kidney lower than the left kidney?
Because of the presence of the liver in the right side, above the right kidney
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At the hilum, which is anterior: renal vein or renal artery?
Renal vein
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The renal artery is anterior to: renal vein or renal pelvis?
Renal pelvis
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Arrange from anterior to posterior: renal pelvis, renal artery, renal vein
Renal vein, renal artery, renal pelvis
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The flattened, funnel-shaped expansion of the superior end of the ureter
Renal pelvis
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The apex of the renal pelvis is continuous with which urinary structure?
Ureter
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The kidney surface is covered by a connective tissue capsule. This capsule consists of which two distinct layers?
Outer layer of fibroblasts and collagen fibers
Inner layer with myofibroblasts
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The kidney can be divided into two distinct regions which are the what?
Outer cortex
Inner medulla
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How much of the cardiac output supplies the kidney?
25%
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What is the basic functional unit of the kidney?
Nephron
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The beginning segment of the nephron that is spherical and contains a unique capillary network.
Renal corpuscle
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Which capillary network is in the renal corpuscle?
Glomerulus
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Vertical striations that eminate from the medulla
Medullary rays
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Each medullary ray is an agregation of which tubules?
Straight tubules and collecting ducts
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What is the special capillary network of the medulla?
Vasa recta or the peritubular capillaries
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Pyramids are in the: cortex or medulla?
Medulla
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Each pyramid is divided into which two parts of the medulla?
Outer medulla and inner medulla
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The outer medulla is divided into which two parts?
Inner stripe and outer stripe
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Which part of the medulla is divided into the inner stripe and outer stripe?
Outer medulla
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The cortical tissue contained within the medulla are called what?
Renal columns
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What is the apical portion of the pyramid?
Papilla
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The number of lobes in a kidney equals the number of cortical pyramids. T/F
F
It is equal the number of MEDULLARY pyramids.
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The lobe of a kidney consists of which parts?
The medullary pyramid and the associated cortical tissue at its base and sides
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Each human kidney contains how many lobes?
8 to 18
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The human kidney is multilobar. T/F
T
Kidneys of some animals possess only one pyramid; these kidneys are classified as unilobar, in contrast to the multilobar of humans.
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What does a lobule consist of?
Collecting duct and all nephrons that it drains.
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What constitutes the renal secretory unit?
The medullary ray containing the collecting duct for a group of nephrons that drain into that duct
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The glumerulus consists of 10 to 20 capillary loops surrounded by a double layered epithelial cup called what?
Bowman’s capsule
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Which renal process occurs in the renal corpuscle?
Glomerular filtration
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The glomerular capillaries are supplied by which vessels?
Afferent arteriole