In the Communication Link Between a Motor Neuron and a Skeletal

question 29

Multiple Choice

In the communication link between a motor neuron and a skeletal muscle,

• A)the motor neuron is considered the presynaptic cell and the skeletal muscle is the postsynaptic cell.
• B)the motor neuron is considered the postsynaptic cell and the skeletal muscle is the presynaptic cell.
• C)action potentials are possible on the motor neuron but not the skeletal muscle.
• D)action potentials are possible on the skeletal muscle but not the motor neuron.
• E)the motor neuron fires action potentials but the skeletal muscle is not electrochemically excitable.

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Definitions:

Break-even

The point at which total costs and total revenues are equal, resulting in no net loss or gain.

Unit Variable Costs

The costs that vary directly with the level of production or output.

Revenue

The total amount of money received by a company for goods sold or services provided during a certain time period.

Break-even Analysis

A calculation to determine the point at which revenue received equals the costs associated with receiving the revenue, indicating no net loss or gain.