Olfactory nerve
The nerve that carries impulses for the sense of smell from the nose to the brain. The olfactory nerve is the first cranial nerve.
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- Oligo- (prefix)
Means just a few or scanty. From the Greek “oligos’, few, scanty. Examples of terms starting with oligo- include oligodactyly (few fingers), oligohydramnios (too little amniotic fluid) and oligospermia (too few sperm).
- Oligoarthritis
Inflammation of four or fewer joints.
- Oligoastrocytoma
A type of malignant brain tumor that belongs to the category of “mixed” gliomas. Gliomas are brain tumors that begin in glial, or supportive, cells in the brain or spinal cord. Malignant gliomas are the most common primary tumors of the central nervous system (the brain and spinal cord). Mixed gliomas are gliomas that contain […]
- Oligodactyly
Having fewer than the normal number of fingers or toes. Oligodactyly is the opposite of polydactyly.
- Oligodendrocyte
A type of cell in the central nervous system. The oligodendrocytes surround and insulate the long fibers (axons) through which the nerves send electrical messages.