When a clot is no longer needed, what is it dissolved by?
A. Platelet-derived growth factor
B. Fibrinase
C. Serotonin
D. Plasmin
E. Prothrombin
Answer: D
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Compared to the inside of the resting plasma membrane, the outside surface of the membrane is
A) positively charged. B) electrically neutral. C) negatively charged. D) continuously reversing so that it is positive one second and negative the next. E) negatively charged whenever the Na+ (--)K+ pump is operating.
Body weight is borne by the two largest tarsal bones: ________ and ________
A) navicular, calcaneus B) talus, calcaneus C) navicular, cuneiform D) talus, navicular
The enzyme found in tears, saliva, and nasal secretions that acts to destroy bacteria is ________.
A. a lysozyme B. an interferon C. an antibody D. All of these choices are correct.
The P wave on an electrocardiogram (ECG) represents the depolarization of cells in the __________.
What will be an ideal response?