Solved Fill in the blanks for the skull, thorax, spine, | Chegg.com - Free Printable

Let’s go step by step to identify each labeled bone in the anterior (front) view of the skull.

We’ll match each number to the correct bone name based on standard human anatomy:

1. Points to the side of the head, near the temple — this is the temporal bone.
2. Points to the lower jawbone — that’s the mandible.
3. SKIP (as instructed)
4. Points to the forehead area — that’s the frontal bone.
5. Points to the small bones inside the eye socket — these are part of the lacrimal bone or possibly ethmoid, but in anterior view, label 5 usually points to the lacrimal bone (small and medial in orbit). However, looking at typical diagrams, #5 often refers to the ethmoid bone (which forms part of the nasal cavity and orbits). But wait — let’s check common labeling:
- Actually, in many standard anterior skull diagrams:
- #4 = Frontal bone
- #5 = Ethmoid bone (visible between the eyes, above nasal cavity)
- #6 = SKIP
- #7 = SKIP
- #8 = Zygomatic bone? Wait — let’s reassign carefully.

Better approach: Use standard anterior skull labels from common textbooks.

Standard anterior skull bones (from top to bottom, left to right):

- Top center: Frontal bone → #4
- Side of head (temple): Temporal bone → #1
- Cheekbone: Zygomatic bone → #9 (points to cheek area)
- Lower jaw: Mandible → #2
- Nose area: Nasal bones → #10 (bridge of nose)
- Upper jaw with teeth: Maxilla → #11 (holds upper teeth)
- Small bone in inner corner of eye: Lacrimal bone → #8? Or maybe #5?
Wait — let’s look again at positions:

Actually, here’s a reliable mapping for this diagram (based on common educational resources like Lippincott Williams & Wilkins, as noted in copyright):

1. Temporal bone – lateral side of skull, near ear region (even though we’re seeing anterior view, it’s visible on the sides)
2. Mandible – lower jaw
3. SKIP
4. Frontal bone – forehead
5. Ethmoid bone – located between the eyes, contributes to nasal cavity and orbits (often shown as a small structure behind the nasal bones)
6. SKIP
7. SKIP
8. Lacrimal bone – smallest facial bone, in medial wall of orbit (inner corner of eye socket)
9. Zygomatic bone – cheekbone
10. Nasal bone – bridge of the nose
11. Maxilla – upper jaw, holds upper teeth
12. SKIP
13. SKIP

But wait — sometimes #5 is labeled as “sphenoid” but sphenoid is mostly internal and not clearly visible anteriorly except its lesser wings. In anterior view, ethmoid is more likely.

Another possibility: Some diagrams label #5 as “frontal process of maxilla” — no, that’s too specific.

Let me cross-check with a standard key:

In many similar diagrams (e.g., from Marieb, Hole, etc.):

Anterior View Skull Labels:

1. Temporal bone
2. Mandible
4. Frontal bone
5. Ethmoid bone (or sometimes “cribriform plate” but that’s internal — so ethmoid is better)
8. Lacrimal bone
9. Zygomatic bone
10. Nasal bone
11. Maxilla

Yes — that fits.

So final assignments:

1. Temporal bone
2. Mandible
4. Frontal bone
5. Ethmoid bone
8. Lacrimal bone
9. Zygomatic bone
10. Nasal bone
11. Maxilla

Note: The diagram skips some numbers (6,7,12,13), so we only answer the non-skipped ones.

Now, double-checking position:

- #1: lateral, near temple → temporal ✔️
- #2: chin/jaw → mandible ✔️
- #4: forehead → frontal ✔️
- #5: between eyes, above nasal cavity → ethmoid ✔️ (it’s deep but visible in anterior view as part of orbital roof/nasal septum)
- #8: inner corner of eye socket → lacrimal ✔️
- #9: cheekbone → zygomatic ✔️
- #10: bridge of nose → nasal bone ✔️
- #11: upper jaw holding teeth → maxilla ✔️

All consistent.

Final Answer:
1. Temporal bone
2. Mandible
4. Frontal bone
5. Ethmoid bone
8. Lacrimal bone
9. Zygomatic bone
10. Nasal bone
11. Maxilla