During a Rest Stop While Hiking, Phil Was Bitten by a Black

question 402

Multiple Choice

During a rest stop while hiking, Phil was bitten by a black widow spider. Shortly after being bitten, he started having breathing difficulties, then experienced muscle spasms. The symptoms he experienced occurred because the black widow spider's venom:

• A) blocked acetylcholine receptor sites on motor neurons.
• B) blocked the release of serotonin from sending neurons.
• C) shut down the functioning of the substantia nigra in Phil's brain.
• D) caused acetylcholine to be continuously released by the motor neurons.

---

Definitions:

Internal Rate

The discount rate at which the net present value of all cash flows from a particular project or investment equals zero, used in evaluating the profitability of investments.

Accept

To agree to take or receive something offered.

Profitability Index

A financial tool used to evaluate the desirability of an investment, calculated by dividing the present value of future cash flows by the initial investment.