somatic motor nucleus n.
Any of the motor nuclei innervating the tongue and external eye muscles.
- Somatic mutation
noun 1. a mutation occurring in a somatic cell, resulting in a change in the morphology or some other aspect of one part of an organism (usually a plant). It may be maintained by vegetative propagation but not by sexual reproduction somatic mutation n. Mutation occurring in the somatic cells as opposed to the germ […]
- Somatic mutation theory of cancer
somatic mutation theory of cancer n. The theory that cancer is caused by a mutation or mutations in the body cells, rather than germ cells, especially by nonlethal mutations associated with increased proliferation of the mutant cells.
- Somatic nervous system
noun 1. (physiol) the section of the nervous system responsible for sensation and control of the skeletal muscles Compare autonomic nervous system somatic nervous system [(soh-mat-ik)] The part of the nervous system that controls voluntary movements in the body, such as those performed by the skeletal muscles (see muscular system). The somatic nervous system also […]
- Somatic reproduction
somatic reproduction n. Asexual reproduction by fission or budding of somatic cells.