Sunkist Navel Orange (1 serving) 1  Calories: 80, Fat: 0g, Carbs: 21g, Protein: 1g. 2  Calories: 80, Fat: 0g, Carbs: 0g, Protein: 0g. 3  Calories: 100, Fat: 0g, Carbs: 21g, Protein: 1g. 4  Calories: 64, Fat: 0g, Carbs: 16g, Protein: 1g. 5  Calories: 0, Fat: 0g, Carbs: 0g, Protein: 0g. 6  Calories: 80, Fat: 0g, Carbs: 21g, Protein: 1g.
Cerebrospinal fluid (CSF) Cerebrospinal fluid (CSF), clear, colourless liquid that fills and surrounds the brain and the spinal cord and provides a mechanical barrier against shock. Formed primarily in the ventricles of the brain, the cerebrospinal fluid supports the brain and provides lubrication between surrounding bones and the brain and spinal cord. When an individual suffers a head injury, the fluid acts as a cushion, dulling the force by distributing its impact.
The frontal cortex forms a thin outer layer over the frontal part of the brain (âcortexâ means âbarkâ in Latin). This thin outer layer (only a few millimetres thick!) emerged relatively recently in our evolutionary historyâmeaning that it emerged with mammals within the past 200 million years.