Label the parts of the heart using the word bank provided.

Let’s work through this step by step.

We are labeling parts of the heart using a word bank. The diagram shows blood flow directions and labels like “to lungs,” “from lungs,” and “to body.” We’ll match each number to the correct part based on anatomy and function.

First, let’s recall what each part does:

- Right atrium: Receives deoxygenated blood from the body (via vena cava).
- Right ventricle: Pumps deoxygenated blood to the lungs via pulmonary artery.
- Left atrium: Receives oxygenated blood from the lungs.
- Left ventricle: Pumps oxygenated blood to the body via aorta.
- Pulmonary artery: Carries blood from right ventricle to lungs.
- Aorta: Carries blood from left ventricle to the rest of the body.

Now look at the diagram:

→ Number 1 points to the large vessel going up from the top center — that’s the aorta (it goes to the body). But wait — in the diagram, it’s labeled with an arrow pointing upward from the top chamber? Actually, looking again:
Number 1 is pointing to the big red vessel coming out of the top-left side of the heart — that’s actually the pulmonary artery, because it says “to lungs” next to it. Wait — no! Let’s re-express carefully.

Actually, let’s go one by one with arrows:

Looking at the diagram:

- Arrow labeled “to lungs” → comes out of the blue (right) side → that’s the pulmonary artery. That’s connected to the lower blue chamber → which is the right ventricle.
- Arrow labeled “from lungs” → enters the pink (left) side → that’s into the left atrium.
- Then blood flows down to the lower pink chamber → left ventricle → which pumps out through the big red vessel labeled “to body” → that’s the aorta.
- On the blue side: blood comes in from “from lungs”? No — wait, the blue side receives blood from the body (not shown directly), but we see “from lungs” entering the pink side. So blue side must be receiving deoxygenated blood — probably from vena cava (top blue tube). That top blue tube leads into the upper blue chamber → right atrium.

So now assign numbers:

1. Points to the vessel going up from the top — actually, looking closely, number 1 is pointing to the pulmonary artery? Or is it the aorta?

Wait — let’s use the clues:

The diagram has:

- Top blue tube → leads to upper blue chamber → that’s right atrium → so if number 2 points to that chamber, then 2 = right atrium.
- Lower blue chamber → pumps to lungs → that’s right ventricle → number 3 likely points there.
- Upper pink chamber → receives from lungs → left atrium → number 5 might point there.
- Lower pink chamber → pumps to body → left ventricle → number 6.
- Vessel going to lungs from right ventricle → pulmonary artery → number 4?
- Big red vessel going to body → aorta → number 1?

But let’s check the positions:

In standard diagrams:

- Number 1: often points to the aorta — but here, the aorta is the big red arch at the top. If number 1 points to that, then yes — aorta.
- Number 4: points to the vessel going to the lungs on the right side — that’s pulmonary artery.
- Number 2: points to the upper blue chamber — right atrium.
- Number 3: points to the lower blue chamber — right ventricle.
- Number 5: points to the upper pink chamber — left atrium.
- Number 6: points to the lower pink chamber — left ventricle.

Yes, that matches.

Confirming with word bank:

Word bank:
left ventrie, right ventricle, right atrium, left atrium, pulmonary artery, aorta

Assign:

1. aorta
2. right atrium
3. right ventricle
4. pulmonary artery
5. left atrium
6. left ventricle

Double-checking:

- Blood enters right atrium (2) → goes to right ventricle (3) → pumped to lungs via pulmonary artery (4) → returns from lungs to left atrium (5) → goes to left ventricle (6) → pumped to body via aorta (1). Perfect.

Final Answer:
1. aorta
2. right atrium
3. right ventricle
4. pulmonary artery
5. left atrium
6. left ventricle