In which form is most of the oxygen carried in arterial blood?
A. Bound to myoglobin
B. Dissolved in the cytosol of erythrocytes
C. Dissolved in the plasma
D. Bound to hemoglobin
E. Converted to HCO3-
Answer: D
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Hydroxyurea is a common drug treatment for sickle cell anemia patients. Hydroxyurea improves sickle cell symptoms because it
A) causes more hemoglobin alpha chains to be produced improving oxygen transport. B) causes more hemoglobin beta chains to be produced improving oxygen transport. C) increases the free iron in plasma. D) stimulates the production of fetal hemoglobin improving oxygen transport. E) increases the production of heme.
Which of the following conditions must be met for rotation of the tibia relative to the femur?
A. the knee is not bearing weight B. the knee is in flexion C. the knee is in extension D. both A and B E. all of the above
At a chemical synapse, the intensity of the stimulus is coded for by _______
A) the size of the action potential and the amount of neurotransmitter released B) the amount of neurotransmitter released and the amount of calcium that enters the axon terminal C) the amount of calcium that enters the axon terminal D) the size of the action potential E) the amount of neurotransmitter released
Infection from a mandibular tooth could spread to each of the following spaces EXCEPT the
A. vestibular space. B. buccal space. C. canine space. D. sublingual space. E. space of the body of the mandible.