Which of the following is NOT a B cell problem in aging?
A. Clones fail to form.
B. Antibodies attack self cells.
C. Antibodies do not function well.
D. Incidence of cancer increases.
Answer: D
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DNA and RNA are examples of ____
a. proteins b. lipids c. nucleic acids d. carbohydrates
Which of the following nerves is located in the pterygomandibular space?
A. Infraorbital nerve B. Posterior superior alveolar nerve C. Inferior alveolar nerve D. Anterior superior alveolar nerve
When a nerve impulse reaches the transmissive segment of a neuron,
A. calcium is released from the neuron along with neurotransmitter from synaptic vesicles. B. calcium and neurotransmitter diffuse into the synaptic knob. C. calcium is pumped into the neuron and neurotransmitter diffuses out through channels. D. calcium diffuses into the neuron and neurotransmitter is released by exocytosis. E. calcium is immediately pumped out of the neuron and vesicles of neurotransmitter undergo phagocytosis.
__________ is an acute airway disease; __________ and __________ are considered the two chronic obstructive pulmonary diseases.
A. asthma; emphysema; bronchitis B. bronchitis; emphysema; asthma C. emphysema; bronchitis; asthma D. pneumonia; emphysema; bronchitis