Bladder
A Muscular Organ That Stores Urine Before Excretion.

Urethra
A Tube In The Excretory System That Carries Urine From The Bladder To The Outside Of The Body.

Reproductive System
An Organ System Responsible For Producing Gametes And Supporting Fertilization And Development.

Ovary
A Female Organ In The Reproductive System That Produces Eggs And Hormones.

Testis
A Male Organ In The Reproductive System That Produces Sperm And Hormones.

Sperm
A Male Gamete Produced In The Testis For Sexual Reproduction.

Digestive System
An Organ System That Breaks Down Food Into Nutrients For Cells.

Egg
A Female Gamete Produced In The Ovary For Sexual Reproduction.

Stomach
A Muscular Organ In The Digestive System That Begins Protein Digestion.

Menstrual Cycle
A Monthly Cycle In The Female Reproductive System That Prepares The Body For Fertilization.