What is the functional role of the T tubules?
A) stabilize the G and F actin
B) enhance cellular communication during muscle contraction
C) hold cross bridges in place in a resting muscle
D) synthesize ATP to provide energy for muscle contraction
B) enhance cellular communication during muscle contraction
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Which of the following is the primary digestive organ involved in regulating the composition of circulating blood?
A) pancreas B) stomach C) small intestine D) large intestine E) liver
Which statement about nervous systems is NOT true?
a. The arthropod nervous system has ganglia that lie within the central nervous system. b. Arthropods have a solid and dorsal nerve cord c. The nerve cord of vertebrates has a segmental branching pattern. d. In vertebrates, interneurons are only found in the central nervous systems.. e. In vertebrates only two neurotransmitters control the effector organ responses regulated by efferent neuronal terminals.
In the carbonic acid-bicarbonate system, which of the its molecular species resists a drop in pH? (HINT: If your stomach pH is too low, what do you do?)
A) CO2 B) H2CO3 C) H2O D) HCO3-
The percentage of the vital capacity that can be exhaled during a specific time period is known as the
A. alveolar ventilation. B. maximal lung capacity rate. C. forced expiratory volume. D. pulmonary minute ventilation. E. tidal volume.