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That part of the central nervous system inside our heads that controls all our perceptions, thoughts, feelings and voluntary movements.

Contributors in Brain


adrenocorticotropin hormone (ACTH)

Anatomy; Brain

This stress-related substance is produced by the pituitary gland. It’s released into your system when you experience injury, emotion, pain, infections or other trauma.


Anatomy; Brain

A class of hormones made of chains of amino acids. These proteins also serve as information messengers for states, moods and thinking. They travel throughout the body.


Anatomy; Brain

A part of the limbic system crucial for creating and accessing long-term memories.

sensory cortex

Anatomy; Brain

Any part of the brain that receives messages from a sense organ (like the eyes, nose, tongue, or ears) or messages of touch and temperature from anywhere in the body.


Anatomy; Brain

A “feel-good” neurotransmitter linked to mood, raised by antidepressants such as Prozac.

neuron parts

Anatomy; Brain

A neuron has three main parts. The nucleus is the center of the cell. The axon sends messages to other neurons. The dendrites receive messages from other neurons.

limbic region

Anatomy; Brain

The limbic area of your brain has many parts. They are important to your memory, emotions, smell, and hunger. They also help determine how you respond to danger.

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