To solve this problem, we need to identify the bones and structures of the human skull shown in the lateral (side) view diagram. Let's go through each label step-by-step.
Step 1: Identify the major Cranial Bones (The brain case)
*
A: This points to the large bone forming the top and sides of the skull. This is the
Parietal bone.
*
B: This points to the bone at the back and base of the skull. This is the
Occipital bone.
*
D: This points to the bone on the side of the skull, near the ear area. This is the
Temporal bone.
*
J: This points to the forehead bone. This is the
Frontal bone.
*
I: The line points specifically to the jagged suture (joint) between the Frontal bone (J) and the Parietal bone (A). This is the
Coronal suture.
Step 2: Identify the Facial Bones and Eye Socket
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K: This points to the small bone at the inner corner of the eye socket. This is the
Lacrimal bone.
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L: This points to the main bone forming the cheek and the lower part of the eye socket. This is the
Zygomatic bone (cheekbone).
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M: This points to the upper jawbone that holds the upper teeth. This is the
Maxilla.
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N: This points to the small scroll-like bone inside the nasal cavity. This is the
Inferior nasal concha.
*
O: This points to the vertical bone in the middle of the face that forms part of the nose. This is the
Vomer (or potentially the perpendicular plate of the ethmoid, but Vomer is standard for this location in basic diagrams). *Correction*: Looking closely at line O, it points to the lower part of the nasal septum. The
Vomer is the correct identification for the inferior part of the nasal septum.
*
P: This points to the lower jawbone. This is the
Mandible.
Step 3: Identify Specific Features and Sutures
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C: This points to the suture connecting the Parietal bone (A) and the Occipital bone (B). This is the
Lambdoid suture.
*
E: This points to the hole in the Temporal bone where sound enters. This is the
External acoustic meatus (ear canal).
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F: This points to the bony projection behind the ear. This is the
Mastoid process.
*
G: This points to the pointed bony projection under the ear/jaw area. This is the
Styloid process.
*
H: This points to the joint where the lower jaw connects to the skull. This is the
Temporomandibular joint (TMJ).
Verification:
Let's double-check the tricky ones.
* Is 'I' a bone or suture? It points to the line between J and A. That is definitely the Coronal suture.
* Is 'O' the Nasal bone or Vomer? The Nasal bone is usually higher up on the bridge of the nose. Line O is pointing deeper inside the nasal cavity at the septum divider. Vomer is the best fit.
* Is 'N' the Inferior Nasal Concha? Yes, it's the curved bone sticking into the nasal cavity from the side wall.
Here is the final list based on standard anatomical labeling for Figure 13-2:
Final Answer:
A. Parietal bone
B. Occipital bone
C. Lambdoid suture
D. Temporal bone
E. External acoustic meatus
F. Mastoid process
G. Styloid process
H. Temporomandibular joint (TMJ)
I. Coronal suture
J. Frontal bone
K. Lacrimal bone
L. Zygomatic bone
M. Maxilla
N. Inferior nasal concha
O. Vomer
P. Mandible
Parent Tip: Review the logic above to help your child master the concept of anatomy and physiology worksheets.
