Which Is a Mnemonic to Remember Which Spinal Segments Contribute

question 45

Multiple Choice

Which is a mnemonic to remember which spinal segments contribute to the nerve that innervates the diaphragm?

• A)T1,2,3 keeps your breathing free!
• B)C8,T1,and 2 are breathing for you!
• C)C3,4,5 keeps the diaphragm alive!
• D)C2,3,4 innervates the diaphragm evermore!

---

Definitions:

Profit per Unit

Is the difference between the selling price of a product and the cost to produce it, expressed on a per-unit basis.

Perfect Competition

Perfect competition describes a market structure where numerous small firms compete against each other, and goods are homogeneous, leading to no single firm having market power and prices being determined purely by supply and demand.

Economic Profits

The excess of total revenues over total costs, including both explicit and implicit costs.

Perfect Competition

An ideal market structure characterized by infinite buyers and sellers, identical products, and no barriers to entry or exit.