Florida Barber License Practice Test

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What forms the back and base of the cranium?

Frontal bone
Temporal bone
Occipital bone
Sphenoid bone

The correct answer is: Occipital bone

The occipital bone is the correct answer because it is specifically shaped to form the back and base of the cranium, providing structural support and protection for the brain. This bone contains the foramen magnum, which is the large opening through which the spinal cord connects to the brain. Its positioning is crucial as it allows for the passage of nervous tissue and is integral to the structure of the skull. In contrast, the frontal bone is located at the forehead and contributes to the anterior part of the skull; the temporal bone is located on the sides of the skull and plays a role in protecting the temples and housing the structures of hearing; and the sphenoid bone, which is situated centrally within the skull, serves as a connection point for several other bones but does not form the back or base of the cranium. Understanding the anatomical structure and placement of these bones helps clarify their functions and confirm why the occipital bone is essential for forming the back and base of the cranium.