Found in a roughly 350-year-old manuscript by Dutch biologist Johannes Swammerdam, the scientific illustration shows the brain of a honeybee drone.

Severe brain injuries often cause an impairment of consciousness. A coma is a state of complete unconsciousness, where patients do not open their ... on in the patient's head." ...

Made up of a complex network of cells called neurons, the brain is the body's most complicated organ, and also the most important. This massive ball of tissue inside ... a huge head to be top ...