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What is the Hindbrain?

Nicole Madison
By
Updated May 17, 2024
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The hindbrain is located toward the rear and lower portion of a person’s brain. It is responsible for controlling a number of important body functions and process, including respiration and heart rate. The brain stem is an important part of the hindbrain, and it controls functions that are critical to life, such as breathing and swallowing. The cerebellum is also located here, playing a role in physical ability.

The brain stem is a structure that connects the brain to the spinal cord. Damage to this structure can be catastrophic, as it controls such things as blood pressure, heartbeat, and swallowing. It is made up of three parts: the medulla, reticular formation, and pons.

The medulla controls how and when a person’s heart beats, as well as his blood pressure, breathing, and even his ability to swallow or cough. This part of a person’s brain stem functions by itself, without relying on the person’s intentions, which is why a person’s heart beats without him making it do so. It’s also the reason people breathe even when they are focused on other things.

The reticular formation is a network of nerves important to a person’s attention or focus, as well as his response to stimuli. This part of the brain helps an individual pay attention to just one important thing, even if he’s faced with several types of stimuli at once. It blocks those less important stimuli, allowing the person to focus. For example, if a person is a potentially dangerous situation, the reticular formation blocks other stimuli, allowing him to focus solely on doing what’s needed to help him survive.

Interestingly, the reticular formation slows down when a person goes to sleep. It does not, however, stop working to block some sensory messages while allowing others through. This area of the brain is the reason many people can stay asleep despite the sounds of passing cars or creaks and groans of a house settling, yet wake to the sound of a smoke detector.

The pons is the part of the hindbrain located above the medulla. It forms a kind of bridge between the medulla and the cerebellum. This structure relays messages between the cerebellum and the cerebrum, which is part of the forebrain. It also helps control movement and plays a role in sleep.

The cerebellum is located to the rear of the brain stem. Its role involves muscle tone and posture, influences motor control, and helps a person to perform smooth, controlled movements. The cerebellum also important in coordinating the movements that people make without thinking or concentrating first, such as walking forward.

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Nicole Madison
By Nicole Madison
Nicole Madison's love for learning inspires her work as a WiseGeek writer, where she focuses on topics like homeschooling, parenting, health, science, and business. Her passion for knowledge is evident in the well-researched and informative articles she authors. As a mother of four, Nicole balances work with quality family time activities such as reading, camping, and beach trips.
Discussion Comments
By anon351080 — On Oct 10, 2013

Of late, I have been getting severe pins and needles down the inside of my legs. Also today I suffered a severe swaying motion, even though I was not moving. It was scary to say the least.

I'm in constant pain and have what feels like a fever. Also I have swelling at the back of my neck. Today was the scariest day I've ever suffered. I have arranged to see my doctor, but my appointment is for next week because he is busy. I'm wondering whether I should wait until then because I've never suffered like this before.

By elizabeth2 — On Feb 07, 2011

I know a lot of people with attention deficit disorder these days. If the reticular formation controls focus, is it possible that people with attention deficit disorder have a problem with that part of the brain?

By geronimo8 — On Feb 06, 2011

It's kind of weird to think that our brain can function by itself, without any influence from what we want. But it's a good thing it does! Can you imagine what life would be like if you had to actually think about your heart beating, to make it beat, or tell yourself that it's time to breathe again? We wouldn't have time left to do anything else, besides tell our body to keep living!

By calpat — On Feb 04, 2011

Every time I read anything about how the brain works to control every aspect of the body, I am amazed. Even though every part of the brain is important, it sounds like the hindbrain is probably the most important part of all, since it contains the brain stem, which controls things like breathing and the beating of the heart.

People sometimes have brain injuries or malformations, and they can still live, even if their quality of life may be a little different than someone with a fully operational brain. But it sounds like we wouldn't even be able to live without the hindbrain.

Nicole Madison
Nicole Madison
Nicole Madison's love for learning inspires her work as a WiseGeek writer, where she focuses on topics like...
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