In the electron transport system (ETS), which of the following are pumped into the intermembrane space, providing the concentration gradient essential for the generation of ATP?
A) oxygen molecules
B) water molecules
C) ATP molecules
D) hydrogen ions
E) cytochromes
C) ATP molecules
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Which of the choices below is the parent cell for all formed elements of blood?
A) normoblast B) hemocytoblast C) polymorphonuclear cell D) megakaryocyte
Damage of the sensory and motor roots on one side would result in loss:
A. on neither side B. on the same side in the area served by the spinal nerve only C. on the opposiste side in the area served by the spinal nerve only D. on the same side below the level damaged in the spinal cord E. on the opposite side below the level damaged in the spinal cord
Hypotension that is associated with neurogenic shock is the result of:
A) loss of alpha receptor stimulation. B) concomitant internal hemorrhage. C) increased peripheral vascular tone. D) profound peripheral vasoconstriction.
Which of these is responsible for the flexibility of bone?
A. collagen B. canaliculi C. calcium salts D. cartilage