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Which of the following bones is not part of the skull?


What bones are in the skull?

The eight bones of the cranium form the “vault” that encloses the brain. They include the frontal, parietal, occipital, temporal, sphenoid and ethmoid bones.

Which bone listed below is not part of the cranium?

The c) palatine bones are not cranial bones. These paired bones are part of the facial bones and form the back of the hard palate as well as parts of the nasal cavity and the orbits.

Which areas of the skull are formed in part by the ethmoid bone?

In the cranial cavity, the ethmoid bone forms a small area at the midline in the floor of the anterior cranial fossa. This region also forms the narrow roof of the underlying nasal cavity. This portion of the ethmoid bone consists of two parts, the crista galli and cribriform plates.

Which bone forms the posterior floor and wall of the skull?

occipital bone

What is the purpose of the facial bones?

Overview. The facial skeleton serves to protect the brain; house and protect the sense organs of smell, sight, and taste; and provide a frame on which the soft tissues of the face can act to facilitate eating, facial expression, breathing, and speech.

What is the thinnest part of the skull?


  • The frontal, parietal, temporal and sphenoid bones unite at the ‘pterion’ – the thinnest part of the skull.
  • The middle meningeal artery runs in a groove on the inner table of the skull in this area.

Why is my skull sinking in?

Dents in your skull can be caused by trauma, cancer, bone diseases, and other conditions. If you notice a change in your skull shape, you should make an appointment with your doctor. Take note of any other symptoms, like headaches, memory loss, and vision difficulties, that could be connected to a dent in your skull.

Do skull dents go away?

According to research in the journal BMJ Case Reports , most congenital skull depressions from a birth injury spontaneously resolve in about 4 months. In other cases, a dent in the head requires treatment. For example, a person with a depressed skull fracture will need surgery.

What is the most common skull fracture?

The parietal bone is most frequently fractured, followed by the temporal, occipital, and frontal bones [10]. Linear fractures are the most common, followed by depressed and basilar skull fractures. (See ‘Definition and presentation of skull fracture types’ below.)

What does skull fracture feel like?

Skull fracture symptoms may include: Small cut, bruise or swelling of the head (up to 24 hours to see bruises and bumps) Pain or tenderness at the site of injury. Headache. Upset stomach.

Do all depressed skull fractures need surgery?

Simple depressed cranial fractures have no galeal disruption and are traditionally managed with surgical elevation only if the extent of depression equals or exceeds the thickness of adjacent, intact bone, or if there is an associated intracranial hematoma with mass effect that requires evacuation.