From deep (innermost) to superficial (outermost), the layers of the organs of the alimentary canal are:
1. mucosa
2. muscularis externa
3. serosa (adventitia)
4. submucosa
A) 3, 2, 4, 1 B) 1, 2, 4, 3 C) 1, 4, 3, 2 D) 1, 4, 2, 3
Answer: D
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Match the terms to changes presented, assuming a resting membrane potential of -70 mV. Answers may be used once, more than once, or not at all.
1. to -50 mV from resting potential 2. to -70 mV from -50 mV 3. to -90 mV from resting potential 4. to +30 mV from resting potential 5. to -70 mV from -90 mV 6. any value other than 0 mV, regardless of relationship to resting potential A. electrical polarization B. hyperpolarization C. depolarization D. repolarization E. more than one of the answers
In DNA replication, ____________.
A. DNA polymerase splices the short segments of the lagging strand together. B. only introns are replicated. C. the two existing strands are not used as templates. D. the leading strand is formed as a continuous strand. E. new nucleotides are added at the 5' end of the growing DNA strand.
How do hormones and target cells recognize one another?
A. by signs B. by the location of the target cells C. by the presence of specific receptor molecules on the target cells D. by the function of the target cells E. by the location of the hormones
Respiratory acidosis results from hyperventilation.
Answer the following statement true (T) or false (F)