Medulla
a medical term for marrow. It exists chiefly in the central canal, in the long bones; blood-vessels, and even nerves, have been traced going in for the nutrition of the osseous tissue.
MEDULLA OBLONGATA (-gā'tä), the cranial prolongation of the spinal cord, of similar structure, but differing by a peculiar arrangement of the strands of the cord before entering into and forming a connection with the brain. In it are found the great ganglionic centers which control respiration, deglutition, MEGALONYX vomiting, etc. Pressure of the medulla oblongata and not strangulation is the actual cause of death in judicial hanging.
It is formed of two lateral columns, each divided into three smaller ones, and passes through the pons Varolii, terminating in the crura cerebelli. MEDUSA (-dū'sä), in classical mythology, one of the Gorgons who, giving ofwhich she prided herself, turned to ser- fense to Minerva, had the fine hair, on pents; her eyes were also endowed with looked at her into stone. There are some unimportant variations in the myth. of the family Medusidæ. It consists of an umbrella-like disk surrounded by numerous short filiform tentacles. power of converting every one who Meduse (the plural): Jelly-fishes, or sea-nettles, a sub-class or order of Hy- Meduse (the plural): Jelly-fishes, or drozoa. It is called Discophora.
Head of Medusa: In astronomy, a por tion of the constellation Perseus, who is supposed to carry the head of Medusa in periodic star Algol. his left hand. It contains the variable or