Which of the Following Is Part of Both the Nervous

question 43

Multiple Choice

Which of the following is part of both the nervous and endocrine systems, and is crucial to maintenance of homeostasis?

• A) adrenal medulla
• B) thyroid gland
• C) hypothalamus
• D) thalamus
• E) medulla oblongata

---

Definitions:

Contribution Margin Ratio

The percentage of each sales dollar that contributes to covering fixed costs and generating profit.

Break-Even Point

The sales level at which total revenues equal total costs, resulting in neither profit nor loss.

Fixed Costs

Costs that do not change with the level of production or sales over a certain range and period, such as rent, salaries, and insurance premiums.

Unit Contribution Margin

The amount by which the selling price of a unit exceeds its variable costs, contributing to covering fixed costs and generating profit.