0081 Merch

Light microscopy of motor neurons in spinal cord grey matter. The cell bodies of motor neurons show a central nucleus and peripheral cytoplasm (deep purple). In histologic sections processes of dendrites and an axon extend from each cell body. In humans one such axon may be a metre in length if supplying the foot. Tissue between the cell bodies is called the neuropil and is formed of intermingling dendrites, axons, capillaries and glial cells. Magnification x100 when narrow width printed at 10 cm.

Cave paintings. This is the Great Hall of the Bulls, in the Lascaux caves in France. They are around 17,000 years old. The superimposed dots of light are the stars as seen in the sky 17,000 years ago. This is illustrating a theory that the positioning of the paintings demonstrates ancient knowledge and use of astronomy. The animals seen here are horses, bulls and stags. The paintings were done by Cro-Magnon man, an early European culture of modern humans (Homo sapiens sapiens), using red and yellow ochre. The paintings may have had religious and artistic significance. See image E448/080 for the paintings without the star map.