An anatomical diagram consisting of a vertical cross-section of the human head, and showing the relations of the nasal and buccal cavities and the pharynx and larynx, circa 1930. (Photo by Hulton Archive/Getty Images) White Background 1930-1939 Human Mouth Vertical Section
None Corporate Business Hand Raised Human Arm Businessman holding a telephone receiver and pointing at the trading board
None Engraving Pole Marie Curie - Physicist Experiment with electromagnet in lab of Pierre and Marie Curie
None Technology Connection Drinking Glass Hand holding wine glass coming out of computer screen (Digital Composite)
Illustration of a human cranium, depicting the sections of the brain responsible for different functions of thought including; time,hope and imitation. (Photo by Pictorial Parade/Archive Photos/Getty Images) People Internal Organ Human Skull Human Thought Processes