When Responding to Stimulation of the Outer Margin of the Sole

question 125

Multiple Choice

When responding to stimulation of the outer margin of the sole of the foot,a 1-year-old infant extends her great toe without fanning of the other toes.This happens because:

• A) the corticospinal fibers have become fully myelinated and the Babinski reflex becomes suppressed.
• B) the corticospinal fibers have not yet become fully myelinated and the Babinski reflex is activated.
• C) the sensory fibers in the ophthalmic branch of the fifth cranial nerve are mediated by reflex arcs.
• D) a deep reflex is mediated by a two-neuron spinal arc.

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Definitions:

Compound Interest

Interest calculated on the initial principal and also on the accumulated interest of previous periods, leading to exponential growth of the investment or loan.

Present Value

The current value of a future amount of money or stream of cash flows, given a specified rate of return.

Required Rate

The minimum return or yield an investment must offer to be considered viable, often referred to as the required rate of return.

Compound Interest

A way of computing interest wherein the initial amount of the loan or deposit and all the interest that has accrued in former periods are included in the calculation.