Our Brain

The brain’s internal structures work together to regulate essential body functions.

Pituitary gland (“master gland”) controls hormone release affecting other glands, temperature, and vital functions, under the direction of the hypothalamus.

Amygdala governs emotions, memory, and the fight-or-flight response, while the hippocampus supports memory, learning, and spatial awareness.

The pineal gland regulates the sleep–wake cycle through melatonin secretion.

The ventricles produce cerebrospinal fluid (CSF), which cushions the brain and removes waste.
The cerebral cortex—the brain’s wrinkled surface—processes perception, movement, and thought.

Biology of Stress

Stress arises when the hypothalamus activates the pituitary–adrenal pathway, releasing cortisol, which increases heart rate, blood pressure, and blood sugar for the fight-or-flight response. Temporary stress is adaptive, but chronic stress keeps cortisol levels high, harming mental and physical health—leading to anxiety, depression, and memory issues.
Research using fMRI shows that mindfulness and meditation can reduce amygdala activation and enhance long-term emotional resilience.