Describe the composition of the gray matter of the spinal cord
A) myelinated axons
B) cell bodies of neurons, neuroglia, and unmyelinated axons
C) myelinated axons and unmyelinated axons
D) neuroglia and spinal meninges
E) spinal meninges
Answer: B
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Antigen presentation is essential for the activation of clonal selection of T cells
Indicate whether the statement is true or false
Which of the following is (are) unique to the suprarenal medullae?
A) Some cells of the suprarenal medulla secrete norepinephrine. B) The systemic effects of the suprarenal medulla are long lasting. C) The suprarenal medulla is a modified sympathetic ganglion. D) Some cells of the suprarenal medulla secrete epinephrine. E) All of the answers are correct.
Polycythemia would be induced by ________ in the blood.
A. decreased carbon dioxide B. decreased oxygen C. increased oxygen D. increased infection