spinal reflex n.
A reflex arc involving the spinal cord.
- Spinal root
spinal root n. Any of the roots of the accessory nerve that arise from the ventrolateral part of the first five segments of the spinal cord.
noun 1. lumbar puncture. lumbar puncture noun 1. Medicine/Medical. puncture into the arachnoid membrane of the spinal cord, in the lumbar region, and withdrawal of spinal fluid, performed for diagnosis of the fluid, injection of dye for imaging, or administration of anesthesia or medication. lumbar puncture noun 1. (med) insertion of a hollow needle into […]
- Spinal vein
spinal vein n. Any of the veins that drain the spinal cord and form a plexus on the surface of the cord from which veins pass along the spinal roots to the internal vertebral venous plexus.
spinate spi·nate (spī’nāt’) adj. Having spines; spined.