Brain Demonstration

Question 1

Describe the Sulci?

Answer 1

• Sulci in same place in all brains
• Central Sulcus = separates frontal from parietal
• Parieto-Occipital Sulcus = separates parietal from occipital
• Lateral Sulcus = separates temporal from other lobes

Question 2

What can you seen in the Inferior Surface of the brain?

Answer 2

• Optic Chiasm lies at the base of the Diencephalon

- Infundibulum (pituitary stalk) = next to the optic chiasm

Question 3

Function and Location of the Ventricular system?

Answer 3

• Posterior Horn of Lateral Ventricles –> Occipital Lobe
• Cortex = Largest part of the brain
• Outside of Lateral Ventricles = Basal Ganglia

Function = Mechanical Protective Role

CSF - removes waste substances from brain surface and delivers products (hormones) to regions of the brain.

Question 4

Describe the Spinal Cord?

Answer 4

• segmented column of neural tissue
• core consists of grey matter (neuronal cell bodies)
• wrapping around of white matter containing axons
• grey matter divided into sensory and motor areas
• Dorsal horns are sensory
• cell bodies of the sensory axons is in the dorsal root ganglion
• sensory information is carried up ascending pathways
• ventral part of the grey matter consists of motor neurons
• axons of the motor neurons go out via the ventral roots and the muscles