Edema can occur when there is
A. an increase in the amount of plasma proteins.
B. a decrease in capillary permeability to proteins.
C. a decrease in blood pressure.
D. a blockage of the lymphatics.
E. an increase in blood colloid osmotic pressure.
D
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Water reabsorption
a. cannot occur from any portion of the nephron in the absence of vasopressin. b. occurs to the greatest extent in the proximal convoluted tubule. c. is under vasopressin control in the proximal tubule. d. is under vasopressin control in the distal and collecting tubules. e. both (b) and (d) above.
All connective tissue is formed from which embryonic germ layer?
A. Endoderm B. Mesoderm C. Mucoderm D. Ectoderm E. Epiderm
Powerful peristaltic contractions that occur a few times each day in the colon are called
A) segmentation. B) pendular movements. C) haustral churning. D) defecation. E) mass movements.
Which renal structure is responsible for producing hypertonic urine by reabsorbing water while allowing metabolic wastes and NaCl to pass through?
A. Glomerulus B. Collecting duct C. Nephron loop D. Distal convoluted tubule E. Proximal convoluted tubule