Chapter Questions
An insect's _________ deliver nitrogen wastes to its gut. a. nephridiac. Malpighian tubulesb. nephronsd. contractile vacuoles
Body fluids of a marine bony fish have a solute concentration that is _________ its surroundings.a. higher thanb. lower thanc. equal to
Bowman's capsule, the start of the tubular part of a nephron, is located in the _____________. a. renal cortexc. renal pelvisb. renal medullad. renal artery
Fluid that enters Bowman's capsule flows directly into the _____________. a. renal arteryc. distal tubuleb. proximal tubuled. loop of Henle
Blood pressure forces water and small solutes into Bowman's capsule during _____________. a. glomerular filtrationc. tubular secretionb. tubular reabsorptiond. both a and $c$
Kidneys return most of the water and small solutes back to blood by way of ____________. a. glomerular filtrationc. tubular secretionb. tubular reabsorptiond. both a and b
7. ADH binds to receptors on distal tubules and collecting ducts, making them __________ permeable to _______________. a. more; waterc. more; sodiumb. less; waterd. less; sodium
Increased sodium reabsorption ___________. a. will make urine more concentratedb. will make urine more dilutec. is stimulated by aldosteroned. both a and c
True or false? Increased secretion of $\mathrm{H}^{+}$ into kidney tubules helps lower the $\mathrm{pH}$ of the blood.
Match each structure with a function. ______ureter ______Bowman's capsule ______urethra ______collecting duct ______pituitary glanda. start of nephronb. delivers urine to body surfacec. carries urine from kidney to bladderd. secretes ADHe. target of aldosterone
The main control center for maintaining the temperature of the mammalian body is in the _____________. a. anterior pituitaryc. adrenal glandb. renal cortexd. hypothalamus
An animal with a low metabolism that maintains its temperature mainly by adjusting its behavior is ____________. a. an endothermb. an ectotherm
True or false? Exposure to cold increases blood flow to your skin, thus warming the skin.