The agglutinogens (or antigens) that determine the ABO and Rh blood types are
A. found in the cytosol of the erythrocytes.
B. located in the cytosol of the leukocytes.
C. part of the reticular connective tissue of the spleen.
D. located on the surface of the leukocytes.
E. found on the surface of erythrocytes.
Answer: E
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Explain why the ratio of motor neurons to muscle fibers is greater in muscles that control eye movement than in postural muscles of the leg.
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Somatostatin is produced in the stomach by ________ cells.
A. G B. parietal C. goblet D. D
Which of these does not contribute to the cessation of the signal in a synaptic transmission?
A. The axon terminal reabsorbs some neurotransmitters by endocytosis. B. Enzymes in the postsynaptic cell break down some neurotransmitters. C. Neurotransmitter escapes from the synapse into the nearby extracellular fluid. D. Neurotransmitters are no longer released. E. Synaptic vesicles secrete neurotransmitter by exocytosis.
The ________________________________________ gland controls body temperature
Fill in the blank(s) with correct word