A swollen, painful area of the skin that is also hot and red are symptoms that accompany what process?
A.
edema
B.
circulatory shock
C.
inflammation
D.
fever
C
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Which of the following statements about the action potential is false?
A) The rapid depolarization phase is caused by the entry of potassium ions. B) During the repolarization phase, sodium channels close and potassium channels open. C) During the depolarization phase, membrane potential becomes positive. D) During the hyperpolarization phase, the ion pumps re-establish the sodium and potassium concentrations across the cell membrane. E) Repolarization occurs as potassium ions leave the axon.
Cholesterol functions in the body as an energy source, and furnishes molecular
components for the synthesis of various sex hormones. Indicate whether the statement is true or false
Which is characteristic of cardiac muscle tissue?
a. well developed sarcoplasmic reticulum. b. fast myosin ATPase activity. c. contraction is initiated neurogenically. d. presence of gap junctions. e. calcium supplied by sarcoplasmic reticulum exclusively.
Which of the following fluids has the greatest concentration of potassium ions?
A) interstitial fluid B) extracellular fluid (ECF) C) cytosol D) plasma