Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store

What are the eight cranial bones?

seo-qna
Last updated date: 19th Jul 2024
Total views: 363k
Views today: 5.63k
Answer
VerifiedVerified
363k+ views
Hint: Neurocranium is also known as the cranial bones of the skull. The neurocranium is a collection of eight bones that form a protective shell for the cerebrum and brainstem. Cranial bone development begins in the early embryonic organism with neural peak and mesoderm cells.

Complete answer:
The frontal, temporal, sphenoid, parietal, occipital, and ethmoid bones are the eight cranial bones. A portion of these bones are combined.
Frontal Bone (1): The front facing bone is an unpaired craniofacial bone that provides incomplete cerebrum inclusion and structures the temple and upper packaging of the eye attachments. It is composed of a squamous section, two orbital sections, and one nasal section. Muscles connected to and surrounding the front facing bone are essential for outward appearance.
The parietal bone (2), is a combined, level cranial bone that covers the mid segment of the skull.
Temporal (2): The temporal bone, also known as the os temporale, is the thickest bone in the human body, located along the edges and base of the skull. It makes room for important cranial conduits, veins, and nerves.
The occipital bone (1) supports stable and versatile joints and has grooves that protect certain cranial nerves and veins.
Sphenoid bone (1): The sphenoid bone at the base of the skull is one of the most unpredictable bones in the body. It is a single bone with numerous foramina (holes) and furrows that allow nerves and veins to pass through or along it.
The ethmoid bone (1), also known as the os ethmoidal, is a single (unpaired), sporadic, extremely punctured bone of the skull located between the eye attachments and running back to the front facing flap of the cerebrum.

Note:
Apart from Cranial bones there are cranial nerves. The nerves that emerge directly from the cerebrum are known as cranial nerves (counting the brainstem). Spinal nerves, on the other hand, emerge from fragments of the spinal string. Cranial nerves relay information from the cerebrum to different parts of the body, especially to and from the head and neck.