138) Excitatory neurotransmitters of the CNS usually act by opening ________ channels.
A) Ca2+
B) Cl-
C) H+
D) K+
E) Na+
E) Na+
You might also like to view...
The surgical removal of the foreskin is called
A) circumcision. B) orchidectomy. C) tubectomy. D) vasectomy. E) pupectomy.
The true ribs
A) attach only to the vertebral column. B) attach directly to the body of the sternum by bone to bone contact. C) are the only ribs that are unpaired. D) consist of twelve pairs. E) attach to the sternum by separate cartilaginous extensions.
In a reversible reaction, when the rate of product formation is equal to the rate of reactant formation, the reaction is
A. a net decomposition reaction. B. a net synthesis reaction. C. in danger of exploding. D. stopped. E. at equilibrium.
Calcitonin and parathyroid hormone (PTH) have:
A) synergistic actions B) antagonistic actions C) similar actions D) totally unrelated actions