Human Brain Anatomy

[This post takes between 2-4 min. to read]

Why, HELLO!

So… don’t get all scared only looking at the title. I pinky promise it
isn’t long or hard (unlike The Beginning Blog * wink wink * ).

Brains rock! They keep us from turning back into cavemen, and give us a real pain when THAT ONE SONG JUST WON’T LEAVE YOUR HEAD. Woohoo! So today’s post is only going to be about the anatomy of the HUMAN brain and its parts and lobes and functions and stuff like that.

Without further ado…

That, by the way, is a brain. Right. Just being clear. It is not striped spaghetti- it is a brain.

The above is a representation of the brain- the left hemisphere dealing with all things logical [a.k.a boooooringgggg… nah, kidding.] as well as control of the right body and the right hemisphere dealing with all things imaginative as well as control of the left body. [Look, I don’t know why the left hemisphere controls the right body and the right hemisphere controls the left body- maybe God just made a mistake. He/She must have just connected the wrong nerves and stuff and been like “Oops!” I don’t know. God is careless. I’m sorry.]

The brain itself is made up of grey and white matter. The brain is made of 75% water and is the fattiest organ in the body, using about 20% of the body’s resources. The information proccesing speed of a brain in a conscious state can produce 10-23 watts of energy. This magical organ is divided into 3 parts- cerebrum, cerebellum and brainstem.

#1- Cerebrum

The cerebrum is composed of grey matter and white matter. The cerebrum is also divided into 4 lobes- frontal lobe, parietal lobe, temporal lobe and occipital lobe.

  • Frontal lobe- The frontal lobe is essentially the control panel of our personality- it is responsible for the expressing of one’s emotions, problem solving, sexual behavior, memory and language.
  • Parietal lobe- The parietal lobe’s function is to process sensory information that has been provided by other body parts. It also aids in manipulation, orientation and sense of touch of objects.
  • Temporal lobe- This lobe is mainly involved in vision, memory, sensory input, language, emotion and comprehension.
  • Occipital lobe- The occipital lobe aids greatly in vision. Some of its functions include- mapping the visual world, determining color as well as assessing distance, depth and size.

#2-Cerebellum

The part highlighted above is the cerebellum. The cerebellum plays an important role in brain control. It also aids in regulating responses to fear and pleasure. Most of the cerebellum is made of tightly folded grey matter, and is separated from the cerebellum by a layer of dura mater. If you want to know more, here’s a link- https://www.slideshare.net/krishnapriya119/cerebellum-parts-and-functions .

#3- Brainstem

The brainstem is continuous with the spine, and is divided into 3 parts- midbrain, pons[if you suddenly thought of Lele Pons and then wondered if brainstems and her last name are connected- I’m right there with you. Scientists suck at naming. Come on- pons? Lele must have been bullied at school. I’m sorry, Lele.] and medulla. It is heavily involved in the control of the cardiovascular system, respiratory control, pain sensitivity control, alertness as well as awareness and consciousness. All information to and from the brain must traverse the brainstem.

  • Midbrain- Aids in eye movement and visual as well as auditory processing.
  • Medulla- This part of the brainstem is a center for circulation and respiration.
  • Pons- Helps in sleep, equilibrium, posture, facial expression and taste.

Now, you guys must have heard of the hippocampus and pituitary gland and stuff like that, and you’re probably wondering- where does that technical, scary sounding stuff fit in? Here. It fits in here. This is the last bit, by the way- brain cross section, your Space Bonus, and then 2 weeks of uninterrupted bliss. Blissssssssss…

#4-Brain Cross Section

  • Olfactory bulb- Receives neural input about odours.
  • Hypothalamus- Controls thirst, fatigue, hunger and body temperature.
  • Pituitary gland- Secretes hormones into bloodstream.
  • Limbic system- The hippocampus, amygdala and cingulate cortex form this, which aids in motivation, emotion, learning and memory.
  • Dentate gyrus- Heavily involved in memory and learning.

Here’s you Space Bonus- it’s about Venus and how life could be possible there, by the way. Pretty awesome. https://www.youtube.com/watch?v=WdM75-tOz60

Goodbye, now go enjoy your blissssssssss.

Published by science_girrrrrl

:I really love science, and it's my passion. So please, please, please help me by reading, commenting on and publicizing my blog!

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