The Action of Any Chemical Messenger Ultimately Depends Not on the Nature

question 72

Multiple Choice

The action of any chemical messenger ultimately depends not on the nature of the messenger, but rather on the

• A)nerve cell stimulated.
• B)half- life of the messenger.
• C)affinity of the receptor.
• D)signal transduction mechanism activated.
• E)organ system activated.

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Definitions:

Conception

The process of a sperm fertilizing an ovum, resulting in the beginning of a pregnancy.

Age Of Viability

The age at which the fetus may survive if born prematurely; begins about 22 weeks after conception.

Neonatal Nurse

A nurse specializing in the care of newborn babies, particularly the ill or premature, during the first month of life.

Premature

Occurring or done before the usual or proper time; too early.