1. Glomerular filtrate A. is almost identical to plasma except that it contains

Question

1.             Glomerular filtrate

A.             is almost identical to plasma except that it contains more protein

B.              is almost identical to plasma except that it contains very little protein

C.             is quite different from plasma in the concentration of most substances

D.            will normally contain significant amounts of protein and red blood cells

E.             has greatly increased concentrations of salts and ions compared to plasma

2.             The kidneys regulate hydrogen ion concentration by the

A.             secretion of hydrogen ions in the tubules

B.             excretion of bicarbonate in the tubules

C.             production of bicarbonate in the tubule cells

D.            secretion of calcium ions in the tubules

E.              a, b, and c

3.             Aldosterone acts by

A.             stimulating glucose metabolism

B.             inhibiting protein synthesis in sodium-transporting cells

C.             stimulating synthesis of proteins that function as water channels and are involved in direct water absorption

D.            stimulating synthesis of proteins that function as sodium channels and are involved in membrane sodium pumps

E.              increasing porosity of cell membranes along the renal tubule

4.             A high plasma concentration of ADH causes

A.             increased water permeability in collecting ducts, and therefore a large final urine volume

B.              increased water permeability in collecting ducts, and therefore a small final urine volume

C.             decreased water permeability in collecting ducts, and therefore a large final urine volume

D.            decreased sodium permeability in collecting ducts, and therefore a small final urine volume

E.             increased potassium permeability in collecting ducts, and therefore a large final urine volume

5. As the kidneys work to maintain water balance in the body, it must be remembered that water can also be lost via

A.             perspiration

B.             the intestinal tract

C.             respiration

D.             liver

Explanation / Answer

1) E: glomerular filtration is a process of increasing the salt and ion concentration by reabsorption process.

2) E The kidneys regulate the hydrogen ion concentration by increasing the hydrogen ion and decreasing the bicorbate ion and production of bicarbonate ion in the tubules.

3) D: Aldosterone is a mineralocorticoid harmone it acts on the renal collecting duct.Thus it acta as a stimulating the function of protiens that acts as sodium channel.

4) E: increased pottassium permeability in collecting duct and therefore a large final urine volume because the ADH concentration is increased due to compulsive water drinking.

Diabetes is caused in ADH low levels.

5) A: Water can be lost from the water through skin evaporation and in the faecus some amount of water is lost through the intestinal tract.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.