Question

Diagram a lateral section and a cross-section of the human brain. Describe the functions of the following parts cerebrum, limbic system, and midbrain.

Short answer

A lateral section of the human brain shows the cerebrum as the largest part, divided into two hemispheres, with the limbic system located beneath it and the midbrain towards the lower rear side. In a cross-sectional view, the cerebrum still dominates, with the limbic system underneath. The cerebrum controls thought processes, learning, memory, sensation, speech, and voluntary movement. The limbic system regulates basic emotions and drives, as well as memory storage and retrieval. The midbrain plays roles in motor movement, particularly of the eye, and in auditory and visual processing.

Step-by-step solution

Research Brain Anatomy

Start by gathering accurate information about the structure of the human brain. Use a variety of reliable sources such as textbooks, scientific articles, and reputable online resources. Take special note of the structures and functions of the cerebrum, limbic system, and midbrain.

Create Lateral Section Diagram

Using your research, sketch a lateral (side) view of the brain. Label the cerebrum (which forms the majority of the brain and is divided into two hemispheres), the limbic system (located under the cerebrum and includes structures such as the hippocampus and amygdala), and the midbrain (located below the cerebral cortex and above the hindbrain). You could use different colors for each part to make your diagram clearer.

Create Cross-Section Diagram

Now, make a cross-sectional (frontal or coronal) diagram of the brain. In this view, you should still be able to depict the cerebrum as the largest part of the brain, with the limbic system underneath it. Indicate the midbrain, which is located towards the lower, rear side of the brain.

Write Descriptions of Functions

Begin with the cerebrum, which controls functions like thought processes, learning, memory, sensation, and voluntary movement. It is also responsible for areas like speech and vision. Next, explain the limbic system. This controls basic emotions (fear, pleasure, anger) and drives (hunger, sex, dominance, care of offspring). It is also significant in memory storage and retrieval. Finally, describe the midbrain which plays roles in motor movement, particularly movements of the eye, and in auditory and visual processing.

Review

Double-check your diagrams and descriptions for accuracy. Ensure you have clearly depicted and labeled each part of the brain, and that your summaries of their functions are comprehensive and accurate.