Question

which of these bones does not directly help protect the brain?
frontal
occipital
zygomatic
temporal

question 8
identify the name of the bone with the correct label : mandible
image of skull with labels a and b
copyright © the mcgraw-hill companies, inc. permission required for reproduction or display

Explanation:

First Question (Which bone does NOT protect the brain?):

• The frontal bone is part of the skull's cranium, protecting the front of the brain.
• The occipital bone is at the back of the cranium, protecting the brain's posterior.
• The temporal bones are on the sides of the cranium, protecting the brain's temporal lobes.
• The zygomatic bone (cheekbone) is part of the facial skeleton, not the cranium, so it does not directly protect the brain.

The mandible is the lower jaw bone, the largest and strongest facial bone, holding the lower teeth and involved in chewing. In a typical skull diagram, if labels are for lower jaw, it's the mandible.

Answer:

C. zygomatic

Second Question (Identify the bone labeled "mandible" – Note: The image shows a skull with labels A and B, but the mandible is the lower jaw, not visible in the provided skull top/front view? Wait, maybe a typo or mislabel. Wait, the mandible is the lower jaw bone. If the image is a skull with A (frontal) and B (maybe nasal or maxilla), but the mandible is below. However, assuming the question is to identify mandible: the mandible is the lower jaw, the only movable bone of the skull, forming the chin and holding teeth. If the image's labels are different, but the mandible is the lower jaw bone. But since the image here shows a skull's upper part, maybe the question has a label error, but the mandible is the lower jaw.