Spinal Cavity

The vertebral cavity; The space within the vertebrae occupied by the spinal cord and its coverings and the cerebrospinal fluid.

Spina Bifida

Condition in which one or more vertebral arches fail to fuse.

Sphypmomanometer

A device that measures blood pressure.

Sphincter Vesicae

Sphincter Vesicae or Sphincter Muscles are circular smooth muscle that regulates urine flow out of the bladder; the internal urethral sphincter.

Spherocytosis

A condition in which the red cells are spherical rather than biconcave.

Spermatogenesis

The formation of sperm.

Spermatic Cord

The vas deferens along with the blood vessels, lymphatic vessels, nerves, muscles and connective tissue fascia that surrounds it, located in the inguinal region.