Which of the Following Are Involved in External Respiration

question 6

Multiple Choice

Which of the following are involved in external respiration?

• A) Red blood cells and body cells
• B) Scalenes and trapezius muscles
• C) Alveoli and pulmonary capillaries
• D) External oblique and transverse abdominal muscles

---

Definitions:

Trade Deficit

An economic measure where a country's importation of goods exceeds its exportation, reflecting a net outflow of domestic currency to foreign markets.

Merchandise Balance

The difference in value between a nation's imports and exports of tangible goods.

Services Balance

A measure of the difference between a nation's exports and imports of services, part of the broader current account balance.

Trade Deficit

A scenario in which a country buys more goods and services from abroad than it sells to other countries, resulting in a negative trade balance.