The Human Brain, Explained

Learn about the most complex organ in the human body, from its structure to its most common disorders.

As part of the body’s nervous system, the brain coordinates all of the body’s functions. Weighing in at around 1.4 kg (3 pounds), the human brain is more complex than any other known structure in the universe and is responsible for all of the body’s functions and learning.

It is comprised of 4 regions:

• Cerebrum – ¾ of the brain’s volume – controls higher functions such as learning, reasoning, speech and senses (sight and hearing).

• Cerebellum – coordinates muscle movements (balance and posture).

• Brain Stem – sensory information, movement, auditory and visual processing – the motor and sensory pathways responsible for cardiac activity, respiration, digestion and sleep.

• Diencephalon – made up of the thalamus, hypothalamus and pituitary gland – these regulate sensations, control weight, energy and instinctual behaviours.

After watching the video above, consider the following question:

What activities improve brain health?

References

Zuckerman, C (2009, Oct 15). The human brain, explained Learn about the most complex organ in the human body, from its structure to its most common disorders. National Geographic . Retrieved from: https://www.nationalgeographic.com/science/health-and-human-body/human-body/brain/​