the blood sinus that surrounds the urethra of the male. Together with the corpora cavernosa, it forms the erectile tissue of the *penis. It is expanded at the base of the penis to form the urethral bulb and at the tip to form the glans penis.
A temporary endocrine gland formed at ovulation from part of the former egg follicle, and the source of progesterone. See PROGESTERONE, ESTROGEN, MENOPAUSE... corpus luteum
either of a pair of cylindrical blood sinuses that form the erectile tissue of the *penis and clitoris. In the penis a third sinus, the corpus spongiosum, encloses the urethra and extends into the glans. All these sinuses have a spongelike structure that allows them to expand when filled with blood.... corpus cavernosum
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