The Correct Answer is {"dropdown-group-1":"D"}
A. Spectrin: This is a cytoskeletal protein that gives red blood cells their flexibility.
B. Erythropoietin: This is a hormone produced by the kidneys that stimulates the production of red blood cells.
C. Serum: Serum is the liquid portion of blood that remains after a clot has formed; it does not prevent clotting.
D. Heparin: Heparin is a natural anticoagulant produced by basophils and mast cells that inhibits the action of thrombin to prevent intravascular clotting.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Overweight people have lower water content per kilogram of body weight than slender people: Adipose (fat) tissue contains significantly less water than muscle tissue. Therefore, a higher body fat percentage results in a lower total body water percentage.
B. Women have higher water content than men: Women generally have more subcutaneous fat than men, giving them a lower water percentage.
C. Elderly people have higher water content than younger people: Total body water typically decreases as people age.
D. Total body water ranges between 30% and 40% of the total body weight: The average adult body is actually 50%–60% water.
Correct Answer is D
Explanation
A. Isotonic: In an isotonic contraction, the muscle changes length to move a load. If the object is too heavy to lift, no movement occurs.
B. Flaccid: Flaccid refers to a lack of muscle tone (limpness), which is not the state of a muscle trying to lift a heavy weight.
C. Treppe: Treppe (the "staircase effect") refers to an increase in the force of contraction when a muscle is stimulated repeatedly after relaxation.
D. Isometric: An isometric contraction occurs when tension increases in the muscle, but the muscle does not shorten because the load is too great to move.
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