Even the most forceful exhalation leaves air in the lungs; this is called the ______ and is needed to _______.
A. tidal volume; acquire adequate O2
B. vital capacity; remove adequate CO2
C. functional residual capacity; keep alveoli patent
D. residual volume; keep alveoli patent
Answer: D. residual volume; keep alveoli patent
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C1 has no body.
Answer the following statement true (T) or false (F)
In the spinothalamic pathway, the sensory neuron that synapses with a neuron in the cerebral cortex is called the ________ neuron
A) first-order B) second-order C) third-order D) fourth-order E) receptive
The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "D"?
A. Site of protein synthesis B. Contains digestive enzymes C. Directs cellular activities, contains DNA D. Major site of ATP synthesis when oxygen is available E. Outer boundary of cell, controls entry and exit of substances
Which of these elements is most likely to be unstable and therefore radioactive?
A. deuterium B. tritium C. hydrogen D. It is not likely that any of these are radioactive.