Organ Systems Vocabulary

Question 1

When Maya checks a diagram of her circulatory system, she reads several statements about arteries and veins. Which statement correctly tells (1) the direction each vessel carries blood relative to the heart and (2) one structural feature that matches that function?

Accepted Answer

Arteries carry blood away from the heart and have thick, muscular walls to handle high pressure; veins carry blood toward the heart, have thinner walls, and contain valves that stop backflow.

Answer

Arteries always carry oxygen‑rich blood and veins always carry oxygen‑poor blood, and both have the same wall thickness.

Answer

Arteries carry blood toward the heart and have thin walls; veins carry blood away from the heart and have thick walls with no valves.

Answer

Both arteries and veins carry blood away from the heart, but arteries have valves while veins have thicker walls.

Question 2

Jaden is writing a short paragraph about how his body gets oxygen from the air and turns food into energy. Which sentence correctly names the main organ of the respiratory system and the main organ of the digestive system, and explains what each organ does using the proper vocabulary?

Accepted Answer

The lungs are the main organ of the respiratory system; they take in oxygen from the air and send it into the blood vessels. The stomach is the main organ of the digestive system; enzymes break down the food into nutrients that can be absorbed.

Answer

The lungs are the main organ of the respiratory system; they remove carbon dioxide from the blood. The stomach is the main organ of the digestive system; it stores food until the body needs it.

Answer

The diaphragm is the main organ of the respiratory system; it helps move air in and out of the lungs. The pancreas is the main organ of the digestive system; it produces enzymes that break down food into nutrients.

Answer

The heart is the main organ of the respiratory system; it pumps oxygenated blood to the body. The small intestine is the main organ of the digestive system; it mixes food with bile to turn it into energy.

Question 3

Which sentence correctly describes the role of the circulatory, digestive, and respiratory systems?

Accepted Answer

The circulatory system carries blood throughout the body, the digestive system breaks down food into nutrients, and the respiratory system takes in oxygen and releases carbon dioxide.

Answer

The circulatory system sends oxygen directly to the lungs, the digestive system turns food into energy, and the respiratory system moves blood to the muscles.

Answer

The circulatory system breaks down food into nutrients, the digestive system moves blood to all parts of the body, and the respiratory system removes carbon dioxide from the bloodstream.

Answer

The circulatory system filters waste from the blood, the digestive system supplies oxygen to cells, and the respiratory system helps the heart beat.

Try three questions

When Maya checks a diagram of her circulatory system, she reads several statements about arteries and veins. Which statement correctly tells (1) the direction each vessel carries blood relative to the heart and (2) one structural feature that matches that function?

Jaden is writing a short paragraph about how his body gets oxygen from the air and turns food into energy. Which sentence correctly names the main organ of the respiratory system and the main organ of the digestive system, and explains what each organ does using the proper vocabulary?

Which sentence correctly describes the role of the circulatory, digestive, and respiratory systems?

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