Mesencephalon Collection

Substantia nigra in Parkinsons disease, illustration
Substantia nigra. Computer illustration showing a degenerated substantia nigra and dopaminergic neurons in Parkinsons disease

Human body showing autonomic nervous system and limbic system
Side view of human body showing autonomic nervous system and limbic system within the brain. Green are parasympathetic nerves. Blue are sympathetic nerves

Transverse section of the midbrain

Pathway of a pain message via sensory nerve in injured muscle, to pain gate in spinal cord to limbic system, frontal cortex and sensory cortex in the human brain

The sympathetic nervous system and the organs of fight-or-flight response

View of limbic system as seen from directly above the head

Endorphins released in the hypothalamus travel down the spinal cord
Serotonin released in the brain travels down the spinal cord to close the pain gates and block pain messages

Sagittal view of human brain showing the corpus callosum

Brain synapse, anatomical artwork
Brain synapse. Anatomical computer artwork of a human brain with an enlargement showing the structure of a synapse (lower right) within one of the striate bodies that make up the striatum

Striatum, anatomical artwork
Striatum. Anatomical computer artwork of a human brain, showing the striate bodies (blue and green) in the midbrain, and the substantia nigra (black) in the brainstem

Substantia nigra, artwork
Substantia nigra. Computer artwork showing a healthy substantia nigra (left) and degenerated substantia nigra (right) from human brains

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The mesencephalon, also known as the midbrain, is a crucial part of our central nervous system. It plays a significant role in various functions and processes within our body. One important aspect is its involvement in Parkinson's disease, where the substantia nigra located in the mesencephalon experiences degeneration. Illustrations showcasing the human body's autonomic nervous system and limbic system provide insights into how these systems interact with the mesencephalon to regulate emotions and bodily functions. Additionally, understanding the pathway of a pain message via sensory nerves in an injured muscle highlights how this region processes and responds to stimuli. The sympathetic nervous system, which triggers our fight-or-flight response during stressful situations, connects with organs through the mesencephalon. This connection ensures that our bodies are prepared for any potential danger. Looking at it from above reveals an intricate view of the limbic system, demonstrating its close proximity to other brain structures like hypothalamus where endorphins are released. These endorphins travel down the spinal cord to alleviate pain or induce pleasure. Examining sagittal views of human brains allows us to observe features such as corpus callosum while transverse sections offer insight into specific regions like midbrain synapses or striatum - both vital components within this area. Exploring different aspects related to mesencephalon provides valuable knowledge about its significance in regulating various bodily functions and responses through interconnected pathways within our brain.