Reticulocytes are produced from erythrocytes
Indicate whether the statement is true or false
F
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Autonomic tone is an important aspect of ANS function because it
A) allows ANS neurons to be silent under normal conditions. B) allows ANS neurons to increase activity on demand but not decrease their activity. C) allows ANS neurons to decrease their activity on demand but not increase their activity. D) allows ANS neurons to increase or decrease their activity, providing a range of control options. E) provides for a narrow range of control options that keeps target tissues constantly active.
Metabolism is defined as _____
A) the taking in of nutrients B) all the chemical reactions occurring in an organism that support life C) the breakdown of substances into simpler forms D) the removal of wastes produced by chemical reactions
Sea cucumbers have internal respiratory sacs called
A) Respiratory trees. B) Papulae. C) Peristomia. D) Lungs.
If one nerve stimulus arrives at a muscle fiber so soon that the fiber does NOT relax at all from the previous twitch, the most likely result will be ________. This can only be achieved in the laboratory.
A. complete tetanus B. incomplete tetanus C. wave summation D. spasm E. fatigue