Which row correctly identifies the parts labelled 1, 2 and 3?

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16. Step 1: Identify the layers of the tooth shown in the longitudinal section. Part 1 is the outermost layer of the crown, which is the enamel. Part 2 is the layer beneath the enamel, which is the dentine. Part 3 is the innermost soft tissue, which is the pulp cavity. Step 2: Match these identifications with the given options. Option B correctly identifies 1 as enamel, 2 as dentine, and 3 as pulp. B 17. Step 1: Understand what coronary heart disease is. Coronary heart disease is a condition where the blood vessels that supply blood to the heart muscle itself become narrowed or blocked. These vessels are called coronary arteries. Step 2: Examine the diagram of the heart and identify the labeled parts. A points to the aorta. B points to the pulmonary artery. C points to the blood vessels running over the surface of the heart muscle, which are the coronary arteries. D points to the left ventricle. Step 3: Determine which labeled part corresponds to the coronary arteries. Part C represents the coronary arteries. C

Which row correctly identifies the parts labelled 1, 2 and 3?

Step-by-step solution

Part 1

Part 2

Part 3· 4 steps

Match these identifications with the given options.

Understand what coronary heart disease is.

Examine the diagram of the heart and identify the labeled parts.

Determine which labeled part corresponds to the coronary arteries.

Part c

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