Match the descriptions to the circuit in the key. Answers...

Match the descriptions to the circuit in the key. Answers may be used more than once.
Key:
a. pulmonary circuit
b. systemic circuit
c. both pulmonary and systemic
Arteries carry $\mathrm{O}_{2}$ -rich blood.

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Key Concepts

Pulmonary Circuit

The pulmonary circuit is responsible for conveying blood between the heart and the lungs. It carries deoxygenated blood from the right side of the heart to the lungs for oxygenation, then returns oxygenated blood back to the heart. A key point is that while it uses arteries and veins like the systemic circuit, the oxygen content in the blood is reversed; the pulmonary arteries carry deoxygenated blood, and the pulmonary veins carry oxygenated blood.

Systemic Circuit

The systemic circuit is the pathway through which oxygenated blood is distributed from the left side of the heart to the various tissues and organs of the body. It returns deoxygenated blood back to the heart. In this circuit, the arteries carry oxygen-rich blood away from the heart, providing vital oxygen and nutrients to the body’s cells.

Circulatory System

The circulatory system is a network of blood vessels and the heart that transports blood throughout the body. It is divided into two main circuits: the pulmonary circuit, which deals with blood flow to and from the lungs, and the systemic circuit, which handles blood flow to the rest of the body. This system is fundamental in delivering oxygen and nutrients to tissues while removing waste products.

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