urinary system ch 42-44 Flashcards
signals generated by osmoreceptors in the subfornical organ & hypothalamus stimulate the secretion of:
ADH
A ______________________drives the filtration of much of the plasma into the nephron.
hydrostatic pressure gradient
kidney stones are called?
renal calculi
Which is not one of the processes of urine formation?
diffusion
the medial surface of each kidney has a notch called the
hilum
more than __ liters of various internal secretions are produced daily
8
the functional unit of the kidney is the:
nephron
hypovolemia
dehydration
which is the most abundant & important positive plasma ion?
sodium
which large molecules are retained by the selectively permeable cell membrane?
proteins
the calyces of the kidney join together to form a large collection reservoir called the ?
renal pelvis
interstitial fluid contains hardly any ____ anions.
protein
the triangular divisions of the medulla of the kidney are known as:
pyramids
which is considered a countercurrent structure?
Henle loop
2 factors that determine urine volume are:
the glomerular filtration rate
&
the rate of water reabsorption by the renal tubules
functions of the urinary system
- filtration of blood
- removal of waste
- regulation of electrolytes
- maintenance of pH balance
urinary systems consists of _____, along w nerves & blood vessels.
kidneys
ureters
bladder
urethra
the functional unit of the kidney is the…
nephron