Which of the following numbers is within the homeostatic pH balance of blood?
-6.40
-7.42
-7.50
-7.30
-7.42
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What region of the nephron reabsorbs about two-thirds of filtered Na+ and Cl-?
A. Glomerulus B. Distal convoluted tubule C. Collecting duct D. Ascending loop of Henle E. Proximal convoluted tubule
The epithelium of the seminiferous tubules consists of
A) interstitial cells and sustentacular cells. B) adipose cells and chondrocytes. C) spermatogenic cells and sustentacular cells. D) spermatogonia and spermatids.
Which of the following lipids are produced in response to cellular injury or disease?
A) cholesterol B) glycolipids C) phospholipids D) sex steroids E) leukotrienes
A severely dehydrated patient begins to experience the formation of random blood clots. Why is this happening?
A. Dehydration leads to a concentration of clotting factors which triggers the extrinsic mechanism of coagulation B. Dehydration stimulates vasospasms which in turn lead to clot formation C. Dehydration collapses the capillaries and exposes collagen which triggers the extrinsic mechanism of coagulation D. Dehydration leads to a concentration of clotting factors which triggers the intrinsic mechanism of coagulation