Lab Quiz 3 study Flashcards
fibrous (renal) capsule of kidney
a transparent capsule that prevents infections in the surrounding regions from spreading to the kidney
renal hilum
medial surface where concave and have vertical cleft, and where the ureter, renal blood vessels, lymphatics and nerves join the kidneys
renal cortex
most superficial kidney region, lighter in color, contains the bulk of nephrons, site of glomerular filtration
renal medulla
deep to the cortex, consist of medullary pyramids, stripped appearance., site of tubular reabsorption
renal columns
spaces between the renal pyramids , bands of granular tissue separating adjacent renal pyramids. contains vessels and urinary tube that run into the cortex.
renal pyramids
cone-shaped tissue masses, board base of each pyramid faces towards the cortex and its apex points internally, appear stripped because they are formed almost entirely of parallel bundles of microscopic urine collecting tubules and capillaries.
renal sinus
a cavity within the kidney which is occupied by the renal pelvis, renal calyces, blood vessels, nerves and fat.
papilla of pyramid
the location where the renal pyramids in the medulla empty urine into the minor calyx in the kidney. Histologically it is marked by medullary collecting ducts converging to form a papillary duct to channel the fluid.
minor calyx
subdivisions of the major calyx, cup-shaped drain that urine is brought to from the renal papilla.
major calyx
large extensions of the renal pelvis, large funnel shaped chamber made up pf 4 or 5 minor calyces
ureters
tube that carries urine from kidney to bladder
urethra
canal through which urine passes from the bladder (and semen passes from the ejaculatory duct in the male) to outside the body
renal artery
bring oxygenated blood to the kidneys
segmental arteries
branches from the renal arteries
interlobar arteries
branches from the segmental arteries
renal vein
exits from the kidneys and drains filtered, deoxygenated blood to the inferior vena cava.
interlobar veins
drains into the renal veins
renal pelvis
a funnel shaped sac that collects the urine and directs it to the ureters, a cavity at the base of the kidney which collects urine from the renal calyces and carries it to the ureter
shell around renal medulla
renal cortex
branches of renal pelvis to renal papillae
calyces
conical mass of tissue within renal medulla
renal pyramind
projection with tiny opening into minor calyx
renal papilla
medial depression for blood vessels to enter kidney
hilum
microscopic functional unit of kidney
nephron
tissue between renal pyramids
renal column
superior funnel-shaped end of ureter
renal pelvis
arrange the following structures to indicate their respective positions in relation to filtrate flow through the nephron: ascending limb of the nephron loop collectioning duct descending limb of the nephron loop distal convoluted tubule proximal convoluted tubule renal papilla
proximal convoluted tubule ascending limb of the nephron loop descending limb of the nephron loop distal convoluted tubule collecting duct renal papilla
pyuria
leukocytes in urine, normal values: 4500-11000, presence of WBCs or pus in urine caused by inflammation of the urinary tract could indicate UTI, including pyelonephritis or gonorrhea
nitrituria
nitrites in urine, normal values: 0, results when gram-negative bacteria such as E. coli reduce nitrates to form nitrites, UTIs
urobilinogen in urine
normal values: 0.2-1 mg/dL, too much can indicate liver disease such as cirrhosis, or hepatitis
proteinuria or albuminuria
normal values: 0-20 mg/dL, increased permeability of the glomerular filtration membrane (proteins are usually too large to pass through); albumin is the most abundant blood protein, pathological: hypertension, glomerulonephritis, ingestion of poisons, bacterial toxins, kidney trauma
nonpathological: excessive physical exertion, pregnancy