Question

complete the following statements: 1. name six cranial bones that are visible on a lateral view of a skull. 2. the __________ suture joins the frontal bone to the parietal bones. 3. the parietal bones are firmly interlocked along the midline by the ________ suture. 4. the ________ suture joins the parietal bones to the occipital bone. 5. the temporal bones are joined to the parietal bones along the __________ sutures. 6. name the three cranial bones that contain sinuses. 7. name a facial bone that contains a sinus.

Explanation:

1. On a lateral view of the skull, the frontal, parietal, temporal, sphenoid, occipital, and zygomatic bones are visible. The frontal is at the front, parietal on the sides and top, temporal on the sides near the ears, sphenoid is a complex central - bone, occipital at the back, and zygomatic forms part of the cheekbone structure.
2. The coronal suture separates the frontal bone from the parietal bones. It runs horizontally across the skull.
3. The sagittal suture interlocks the two parietal bones along the mid - line of the skull.
4. The lambdoid suture joins the parietal bones to the occipital bone at the back of the skull.
5. The squamous sutures connect the temporal bones to the parietal bones.
6. The frontal, ethmoid, and sphenoid cranial bones contain sinuses. These sinuses are air - filled cavities that lighten the skull and may have a role in voice resonance.
7. The maxilla is a facial bone that contains the maxillary sinus, which is the largest of the facial sinuses.

Answer:

1. Frontal bone, parietal bone, temporal bone, sphenoid bone, occipital bone, zygomatic bone
2. Coronal
3. Sagittal
4. Lambdoid
5. Squamous
6. Frontal bone, ethmoid bone, sphenoid bone
7. Maxilla