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TLS Online TPP Program

#Question id: 7278

The following demonstrates the blastocoel formation in the mammals. Which of the following statement is correct?

#Unit 5. Developmental Biology
  1. The membranes of inner cell mass contain sodium pumps that pump Na+ into the central cavity. The subsequent accumulation of Na+ draws in water osmotically, creating and enlarging the blastocoel.
  2. The membranes of trophoblast cells contain sodium pumps  that pump Na+ into the central cavity. The subsequent accumulation of Na+ draws in water osmotically, creating and enlarging the blastocoel.
  3. The membranes of inner cell mass contain potassium pumps that pump K+ into the central cavity. The subsequent accumulation of K+ draws in water osmotically, creating and enlarging the blastocoel.

  4. The membranes of trophoblast cells contain potassium pumps that pump K+ into the central cavity. The subsequent accumulation of K+ draws in water osmotically, creating and enlarging the blastocoel.

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TLS Online TPP Program

#Question id: 11942

#Unit 7. System Physiology – Animal

A patient’s urine is collected for 2 hr, and the total volume is 600 ml during this time. Her urine osmolarity is 150 mOsm/L, and her plasma osmolarity is 300 mOsm/L. What is her “free water clearance”?
TLS Online TPP Program

#Question id: 11944

#Unit 7. System Physiology – Animal

The maximum clearance rate possible for a substance that is totally cleared from the plasma is equal to which of the following?
TLS Online TPP Program

#Question id: 11945

#Unit 7. System Physiology – Animal

A patient has the following laboratory values: arterial pH = 7.13, plasma HCO3− = 15 mEq/L, plasma chloride concentration = 118 mEq/L, arterial Pco2 = 28 mm Hg, and plasma Na+ concentration = 141 mEq/L. What is the most likely cause of his acidosis?
TLS Online TPP Program

#Question id: 12070

#Unit 7. System Physiology – Animal

A 26-year-old man develops glomerulonephritis, and his GFR decreases by 50% and remains at that level. For which of the following substances would you expect to find the greatest increase in plasma concentration?
TLS Online TPP Program

#Question id: 12071

#Unit 7. System Physiology – Animal

The most serious hypokalemia would occur in which of the following conditions?
TLS Online TPP Program

#Question id: 12072

#Unit 7. System Physiology – Animal

If the average hydrostatic pressure in the glomerular capillaries is 50 mm Hg, the hydrostatic pressure in the Bowman’s space is 12 mm Hg, the average colloid osmotic pressure in the glomerular capillaries is 30 mm Hg, and there is no protein in the glomerular ultrafiltrate, what is the net pressure driving glomerular filtration?