During the fasting state, the energy stores of the ________ become the major source of glucose for the whole body.
A) brain
B) liver
C) adipose tissues
D) pancreas
E) muscles
B) liver
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Which correctly describes functions of protein C?
A. It activates clotting factor XII and platelets. B. It activates platelets and converts prothrombin to thrombin. C. It binds to tissue factor and activates clotting factor VII. D. It inhibits clot formation and inactivates factors Va and VIIIa. E. It inactivates thrombin and converts fibrinogen to fibrin.
The fluid link between the external and internal environment is ________.
A) plasma B) intracellular fluid C) interstitial fluid D) cerebrospinal fluid
Which of the following is true of potassium ions?
a. they are actively secreted in the proximal tubule b. their concentration is controlled by aldosterone c. changes in concentration can affect membrane excitability d. are reabsorbed in the distal tubule e. both (b) and (c)
Which of the following is true concerning isotonic eccentric contraction?
A. The muscle lengthens but tension remains constant. B. The muscle lengthens and tension declines. C. The muscle shortens but tension remains constant. D. The muscle tenses and shortens. E. The muscle tenses but length remains unchanged.