You Have Three Strains of Mice

question 18

Multiple Choice

You have three strains of mice:
A,B,and C.You experimentally manipulate each strain and find that all three show increased secretion of molecule X.Now you perform a parabiosis experiment with the three combinations of these mice:
AB,AC,and BC.You perform the same experimental manipulation as above on one mouse of each pair without directly affecting the other mouse and look for effects on the other mouse.You find no detectable effect on the unmanipulated partner in any of the combinations.What is the logical conclusion based on these results?

• A)The effect on molecule X is not mediated by hormones.
• B)The effect on molecule X is not mediated by nerves.
• C)The effect on molecule X was just an artifact of the first experiment.
• D)The effect on molecule X is controlled by higher integrative centers of the brain.

Recognize the roles and effects of neurotransmitter reuptake and blockage.

Comprehend the neurotransmitter function in Parkinson's disease and its symptoms.

Understand the neurotransmitter roles in childbirth pain reduction and muscle activation.

Identify the structure and function of the nervous system, including the central, peripheral, and autonomic systems.

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Definitions:

Annuity Contract

A financial product sold by insurance companies that pays out income, and can be used as part of a retirement strategy to provide a steady income stream in later years.

Life Expectancy Tables

Charts used by the IRS to calculate required minimum distributions for retirement accounts.

Annual Contributions

Yearly monetary additions made to retirement savings plans, investment accounts, or other savings vehicles.

Taxable Amount

The portion of income, withdrawals, or distributions subject to tax.