Match the columns and choose the correct option.

Column I	Column II
A.    Progress zone	i.                    thickening of the ectoderm at the apex of the developing limb bud
B.     Apical ectodermal ridge	ii.                  The cells found within the most posterior region
C.     Zone of polarizing activity	iii.                The highly proliferative mesenchyme that fuels limb bud growth

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#Question id: 12276

#Unit 7. System Physiology – Animal

Because the usual rate of phosphate filtration exceeds the transport maximum for phosphate reabsorption, which of the following is true?

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#Question id: 12300

#Unit 7. System Physiology – Animal

Which of the following changes, compared with normal, would be expected to occur, under steady-state conditions, in a patient whose severe renal disease has reduced the number of functional nephrons to 25% of normal?

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#Question id: 12301

#Unit 7. System Physiology – Animal

Which of the following would likely lead to hyponatremia?

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#Question id: 11481

#Unit 7. System Physiology – Animal

Which of the following sensory receptors is correctly paired with its category?

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#Question id: 12955

#Unit 7. System Physiology – Animal

Which of the following would tend to decrease GFR by more than 10% in a normal kidney?

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#Question id: 12954

#Unit 7. System Physiology – Animal

A 55-year-old male patient with hypertension has had his blood pressure reasonably well controlled by administration of a thiazide diuretic. During his last visit (6 months ago) his blood pressure was 130/75 mm Hg and his serum creatinine was 1 mg/100 ml. He has been exercising regularly for the past 2 years, but recently has complained of knee pain and began taking large amounts of a nonsteroidal anti-inflammatory drug. When he arrives at your office, his blood pressure is 155/85 and his serum creatinine is now 2.5 mg/100 ml. Which of the following best explains his increased serum creatinine?