posterior root n.
See dorsal root.
- Posterior scalene muscle
posterior scalene muscle n. A muscle with origin from the fourth to the sixth cervical vertebrae, with insertion into the second rib, with nerve supply from the cervical and brachial plexuses, and whose action elevates the second rib.
- Posterior scleritis
posterior scleritis n. Scleritis that exhibits a tendency to extend posteriorly to the sheath of eyeball and to cause chemosis.
- Posterior scrotal nerve
posterior scrotal nerve n. Any of several terminal branches of the perineal nerve supplying the skin of the rear portion of the scrotum.
- Posterior scrotal vein
posterior scrotal vein n. Any of the veins passing from the scrotum to the internal pudendal veins.