All living things have a built&#x2d;in circadian rhythm that regulates sleep, hunger, and energy levels. This system affects many body processes.

Time

Alarm clock

Farmer conducting research using a digital tablet in a greenhouse

Businessman sleeping during airplane journey

Night owl or morning lark?

She's still full of energy compared to mom

Guy hates getting up early

Young attractive woman awake late at night using smart phone lying in bed in a dark bedroom. Using mobile for chatting and sending messages in internet addiction, mobile abuse and insomnia concept

Good morning world

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The human brain is so much more than a three-pound block of grey matter. It controls all our life functions, conscious and unconscious. It encapsulates all our memories, emotions, creativity, and morals. There are only a few things in our body that are not governed by our brains.

The brain is made up of a cerebrum, cerebellum, and brainstem. Within that, it is further divided into two hemispheres and several lobes. The cerebrum handles basic senses like touch, vision, and hearing, as well as more complicated functions like speech, reasoning, and emotion. The cerebellum is responsible for movement, posture, and balance. The brainstem helps with unconscious functions like breathing, heart rate, sleep cycles, and swallowing.

Within the main part of the brain, the cerebrum, there are natural fissures. These fissures are called lobes, and each serves a specific function but do not work on their own. For example, the frontal lobe handles personality, behavior, and emotion; this cannot work without the parietal lobe. The parietal lobe interprets language as well as visual and audible senses. Without a lobe to interpret what we see and hear, we cannot for react to stimulus.

Anatomy

<div class="" data-block="true" data-editor="8v4h4" data-offset-key="1smsj-0-0">
<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="1smsj-0-0"><span data-offset-key="1smsj-0-0">Anatomy is a branch of biology. This branch of science in particular deals with organisms and their biological structure. Human anatomy, along with physiology and biochemistry, forms the basis of medicine.</span></div>
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<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="e054a-0-0"><span data-offset-key="e054a-0-0"> </span></div>
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<div class="" data-block="true" data-editor="8v4h4" data-offset-key="8jihb-0-0">
<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="8jihb-0-0"><span data-offset-key="8jihb-0-0">Some parts that make up the body's structure are </span><span class="adverb"><span data-offset-key="8jihb-1-0">incredibly</span></span><span data-offset-key="8jihb-2-0"> complex. Take the circulatory system, for example, which contains the heart and blood vessels. This system </span><span class="complexword"><span data-offset-key="8jihb-3-0">handles a lot of responsibility.</span></span><span data-offset-key="8jihb-4-0"> many crucial functions. It transports blood, nutrients, waste products, immune cells, and clotting cells. It is also </span><span class="adverb"><span data-offset-key="8jihb-5-0">closely</span></span><span data-offset-key="8jihb-6-0"> tied to the lymphatic system and our immune system. </span></div>
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<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="8jihb-0-0"><span data-offset-key="8jihb-6-0">As you can see, no one part of our anatomy functions completely separate from the others. </span>All the parts of the structure must get along in order for the body to function.</div>
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