NEET PG DENTAL EXAM

Detailed explanation-1: -The cranial cavity, also known as intracranial space, is the space within the skull that accommodates the brain. The skull minus the mandible is called the cranium. The cavity is formed by eight cranial bones known as the neurocranium that in humans includes the skull cap and forms the protective case around the brain.

Detailed explanation-2: -The paranasal sinuses (the hollow spaces in the skull and facial bones around the nose) are air-filled cavities within the frontal, ethmoidal, sphenoidal, and maxillary bones. They are outgrowths from the nasal cavity. All of them drain into the superior or lateral aspect of the nose.

Detailed explanation-3: -What are fontanelles? There are 2 fontanelles (the space between the bones of an infant’s skull where the sutures intersect) that are covered by tough membranes that protect the underlying soft tissues and brain. The fontanelles include: Anterior fontanelle (also called soft spot).