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Biology Question 94 – NEET-UG 2025

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What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog ?

Understand the basic components and pathways of the circulatory system in amphibians, specifically how blood flows to and from the heart.

Step 1: Analyze the Blood Flow Direction and Type✦ Active

The question asks for the blood vessel that carries deoxygenated blood from the body to the heart in a frog. This describes the systemic venous return pathway.

Step 2: Recall Functions of Major Blood Vessels in a Frog○ Expand

1. **Aorta:** Carries oxygenated blood from the heart to various parts of the body. 2. **Pulmonary artery:** Carries deoxygenated blood from the heart to the lungs and skin for oxygenation. 3. **Pulmonary vein:** Carries oxygenated blood from the lungs and skin back to the heart. 4. **Vena cava (anterior and posterior):** Collects deoxygenated blood from the body (systemic circulation) and delivers it to the right atrium of the heart.

💡 Teacher's Secret Hint

Remember that arteries generally carry blood away from the heart, and veins carry blood towards the heart, with the pulmonary vessels being key exceptions regarding oxygenation status.

Step 3: Match the Vessel to the Description○ Expand

Based on the functions, the vena cava is the blood vessel responsible for carrying deoxygenated blood from the body to the heart in a frog.

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