The function of the pulmonary circuit in a dog is to __________.

• A. carry oxygen and nutrients to tissues where they are needed
• B. retrieve waste products from the body tissues
• C. carry blood through the heart, lungs, and all of the body tissues
• D. carry absorbed nutrients from the small intestine to the liver
• E. carry carbon dioxide to the lungs and pick up oxygen from the lungs

Answer: (E)

Verified step by step guidance

1. Understand the role of the pulmonary circuit: The pulmonary circuit is a part of the circulatory system that specifically deals with the exchange of gases in the lungs.
2. Identify the main components involved: The pulmonary circuit includes the right side of the heart, pulmonary arteries, lungs, and pulmonary veins.
3. Recognize the direction of blood flow: Blood flows from the right ventricle of the heart through the pulmonary arteries to the lungs.
4. Determine the gas exchange process: In the lungs, carbon dioxide is released from the blood, and oxygen is absorbed into the blood.
5. Conclude the function: The primary function of the pulmonary circuit is to carry carbon dioxide to the lungs for exhalation and pick up oxygen to be transported back to the heart and then to the rest of the body.