Spindle cell
A cell that is tapered at both ends.
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- Spindle neuron
A large neuron tapered at both ends that is only found in humans and great apes and so is thought to be a relatively recent evolutionary addition to the nervous system. Spindle neurons are confined to the anterior cingulate cortex, a region of the brain that plays a role in emotion, decision-making, and autonomic functions […]
- Spine
i.e., cervical spine (neck), thoracic spine (upper and middle back), and lumbar spine (lower back). See also vertebral column. 2) Any short prominence of bone. The spines of the vertebrae protrude at the base of the back of the neck and in the middle of the back. These spines protect the spinal cord from injury […]
- Spinocerebellar
Pertaining to the spinal cord and the cerebellum, as in spinocerebellar ataxia (ataxia with cerebellar malfunction).
- Spinocerebellar ataxia
Ataxia with malfunction of the cerebellum.
- Spinous process
A slender projection from the back of a vertebra to which muscles and ligaments are attached.