Human Skeletal System labeled diagram for educational purposes.

Let’s solve this step by step.

We are given a diagram of the human skeletal system with blank lines pointing to different bones. Below the diagram, there is a word bank with 12 bone names:

- scapula
- femur
- rib cage
- patella
- pelvis
- radius
- fibula
- cranium
- vertebrae
- mandible
- tibia
- coccyx

Our job is to match each labeled line on the skeleton to the correct bone name from the word bank.

Let’s go from top to bottom and left to right, matching each line to the correct bone.

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Topmost line (pointing to the skull):
That’s the cranium — it’s the part of the skull that holds the brain.

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Next line down, pointing to the jaw:
That’s the mandible — your lower jawbone.

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Line pointing to the shoulder blade area (on the back side, but shown here as front view — still refers to shoulder girdle):
Actually, looking at the position — it’s pointing to the upper chest/shoulder region. But in standard diagrams, if it’s pointing to the flat bone behind the shoulder, it’s the scapula. However, in this front-view diagram, the line might be pointing to the collarbone area — but “clavicle” isn’t in the word bank. Wait — let’s check again.

Looking carefully: The first line after the head points to the neck/spine area? No — actually, let’s number the lines from top to bottom based on where they point.

Better approach: Let’s list the lines in order from top to bottom as they appear on the diagram:

1. Points to top of head → cranium
2. Points to lower jaw → mandible
3. Points to shoulder area (left or right) → likely scapula (even though it’s posterior, sometimes diagrams label it from front for simplicity)
4. Points to center of chest → rib cage
5. Points to spine middle section → vertebrae
6. Points to hip/pelvic area → pelvis
7. Points to thigh bone → femur
8. Points to knee cap → patella
9. Points to shin bone (front of lower leg) → tibia
10. Points to outer lower leg bone → fibula
11. Points to tailbone at base of spine → coccyx
12. Points to forearm bone (thumb side) → radius

Wait — we have 12 words and 12 lines. Let’s map them properly.

Actually, let’s count the lines in the image description (since I can’t see the image, I’ll rely on standard labeling):

Standard human skeleton diagram labels usually go:

Head → Cranium
Jaw → Mandible
Shoulder → Scapula (or clavicle, but scapula is in list)
Chest → Rib cage
Spine → Vertebrae
Hip → Pelvis
Thigh → Femur
Knee → Patella
Lower leg inner → Tibia
Lower leg outer → Fibula
Tailbone → Coccyx
Forearm (lateral) → Radius

But wait — what about the other forearm bone? Ulna is not in the list. So only radius is listed.

Also, note: “rib cage” is one term, even though it’s multiple ribs.

Now, let’s assign each line based on typical positioning:

Assuming the lines are drawn from left to right across the body, top to bottom:

Line 1 (top of head) → cranium
Line 2 (jaw) → mandible
Line 3 (shoulder) → scapula
Line 4 (chest) → rib cage
Line 5 (spine mid-back) → vertebrae
Line 6 (hip) → pelvis
Line 7 (thigh) → femur
Line 8 (knee) → patella
Line 9 (shin) → tibia
Line 10 (outer lower leg) → fibula
Line 11 (base of spine) → coccyx
Line 12 (forearm, thumb side) → radius

That uses all 12 terms.

But wait — is “radius” pointing to the forearm? Yes, and since ulna isn’t an option, radius must be the one labeled.

Also, confirm: coccyx is at the very bottom of the spine — yes.

So final matching:

From top to bottom, left to right (as typically arranged in such worksheets):

1. Cranium
2. Mandible
3. Scapula
4. Rib cage
5. Vertebrae
6. Pelvis
7. Femur
8. Patella
9. Tibia
10. Fibula
11. Coccyx
12. Radius

But let’s double-check the word bank order vs. diagram.

Since the user didn’t specify which line is which, but in most such diagrams, the labels are placed next to the bones in anatomical order.

Alternatively, perhaps the lines are numbered implicitly by their vertical position.

To avoid confusion, let’s think of the most logical assignment based on common knowledge:

- Head top: cranium
- Jaw: mandible
- Shoulder blade: scapula
- Chest ribs: rib cage
- Spine: vertebrae
- Hip bones: pelvis
- Thigh: femur
- Knee cap: patella
- Shin: tibia
- Outer lower leg: fibula
- Tailbone: coccyx
- Forearm (lateral): radius

Yes, that covers all.

Now, to present the answer clearly, we should list the bone names in the order the lines appear — but since the image isn't visible, and the problem expects us to fill in the blanks, the best way is to provide the correct matches as per standard anatomy.

However, in many such worksheets, the lines are arranged vertically down the page, so we can assume the top line is cranium, then mandible, etc.

But to be precise, let’s consider that the diagram likely has lines pointing to specific parts, and we need to write the correct term beside each.

Since I can’t see the exact placement, I’ll use the most common configuration for such educational diagrams.

Final decision: Based on standard human skeleton labeling exercises, here is the correct matching:

- Line pointing to skull: cranium
- Line pointing to jaw: mandible
- Line pointing to shoulder: scapula
- Line pointing to chest: rib cage
- Line pointing to spine: vertebrae
- Line pointing to hips: pelvis
- Line pointing to thigh: femur
- Line pointing to knee: patella
- Line pointing to shin: tibia
- Line pointing to outer lower leg: fibula
- Line pointing to tailbone: coccyx
- Line pointing to forearm: radius

All 12 terms are used exactly once.

Therefore, the completed diagram would have these labels assigned correctly.

Final Answer:
cranium, mandible, scapula, rib cage, vertebrae, pelvis, femur, patella, tibia, fibula, coccyx, radius