The term blood type refers to the type of blood cell
antibody.
antigen.
transfusion reaction.
The Correct Answer is B
A. antibody: While antibodies are present in the plasma, they are the opposite of the blood type (e.g., Type A blood has anti-B antibodies).
B. antigen: Blood types (A, B, AB, O) are named based on the specific markers (antigens) found on the surface of the red blood cell.
C. transfusion reaction: This is the result of a blood type mismatch, not the definition of the blood type itself.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. a relative lack of ATP: ATP is required for the cross-bridge cycle; a deficiency prevents muscle contraction and relaxation.
B. high levels of lactate: Anaerobic respiration leads to lactic acid buildup, which lowers pH and interferes with enzyme activity and calcium binding.
C. failure of the sodium-potassium pumps: Ion imbalances caused by pump failure prevent the muscle membrane from repolarizing correctly.
D. all of the above: Muscle fatigue is a complex process caused by the combination of energy depletion, chemical buildup, and ion imbalances.
Correct Answer is B
Explanation
A. have no effect on the deviation from set point: They have a major effect by pushing the body further away from the set point temporarily.
B. accelerate a change: Unlike negative feedback (which reverses change), positive feedback reinforces or amplifies the stimulus (e.g., labor contractions or blood clotting).
C. ignore a change: Biological control systems are designed specifically to respond to change, not ignore it.
D. do not exist in human systems: They do exist, though they are much less common than negative-feedback loops.
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