The brain is protected by three membrane layers. From the outermost layer, they are the thick dura mater, the arachnoid mater, the subarachnoid space beneath it, and the pia mater which sticks directly to the brain.

The frontal and parietal lobes lie above this sulcus, and the temporal lobe lies underneath.

Of the spinal nerves, eight pairs are cervical nerves.

Controls movement in the contralateral side of the body (in this case, Alice-chan's right side).

Just what is going on inside the head of a girl genius? We looked to NASA* to find out the truth.

*NASA = Brainnou and Headatama of Shimada Alice

Learning with Shimada Arisu-chan: Inside a girl's head

Little note from Boko: There are no pain receptors in the brain itself. You could cut out a piece of the cerebellum and sauté it in a frying pan and still be okay ♪

Involved in the processing of auditory stimuli. Located around the temples.

Located on the left hemisphere of the cerebrum. When this area is damaged, the ability to speak is lost.

Integration of auditory and visual stimuli occurs here. It is involved in the recognition and categorization of different shapes, colors, and sounds.

Responsible for fine-tuning of movements and balance. It makes up about 10% the weight of the entire brain.

Visual information makes its way to the brain via the optic nerve which arises from the back of the eye. The brain's "branch office".

The lowest portion of the brainstem. As it is the center responsible for the regulation of breathing, heart rate, swallowing, vomiting, and coughing, its importance in the Arisu-chan's survival cannot be understated.

Involved in thinking, decision making, creating plans, and predicting the future. I wonder if this area of the brain is much more developed in a genius in the Way of the Tank than the average person.

A colorless, transparent liquid that fills Arisu-chan's skull. The brain floats in this extracellular fluid, protecting it from shock. The total volume of cerebrospinal fluid is on average 100-150 cubic centimeters.

The largest portion of the brain, responsible for the inner machinations of the mind. In the case of mammals, it is most developed in humans, elephants, and dolphins in that order. Let's take a closer look at the frontal and temporal lobes of the left hemisphere of Arisu-chan's brain!

Along with the brain, it forms the central nervous system.

See, I'm fine!

In order from the outside, 1. Hair of the head 2. Skin 3. Skull 4. Dura mater 5. Arachnoid mater 6. Pia mater and finally Arisu-chan's precious brain, which they protect.

Bermuda memo: Shimada Arisu (13 year old female)'s brain data

• Weight/length: 1200g/15cm
• Composition: 77% water, 10% lipids, 8% protein, misc.
• Number of neurons: approximately 100 billion (about 14 billion of which are in the cerebrum)<\li>
• Hardness/taste: like gelatin but slightly harder/unknown

Don't you think the way Commander gets all quiet when she thinks is cool?

Yeah... ♡

I'm sure she's coming up with a complicated strategy right now...

Peropero ♡ Likely a referece to eyeball licking.