Which of the following spinal nerve groups is incorrect?
A. Cervical-7
B. Sacral-5
C. Thoracic-12
D. Lumbar-5
Answer: A
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Chemical buffer systems act rapidly against shifts in pH, whereas physiological buffer systems function more slowly.
Answer the following statement true (T) or false (F)
The cells responsible for the production of circulating antibodies are ________.
A) suppressor T cells. B) helper T cells. C) NK cells. D) plasma cells. E) cytotoxic T cells.
A patient has contracted the hepatitis C virus. Which of the following drug therapies might be effective?
A. Aspirin B. Interferon C. Penicillin D. Ibuprofen
When a neuromodulator slows the reuptake of a neurotransmitter or causes expression of an increased number of receptors on postsynaptic neurons, the effect is called
A. presynaptic potentiation. B. recruitment. C. spatial summation. D. facilitation. E. temporal summation.