Knowledge center. Tetanus (or lockjaw) is a serious infection caused by Clostridium tetani bacteria which produce a toxin that affects the brain and nervous system.
The ovary is an ovum-producing reproductive organ, often found in pairs as part of the vertebrate female reproductive system. Ovaries are oval-shaped endocrine system glands, the group of glands that produce a variety of hormones human body needs to function appropriately.Ovaries are found in females, one on each side of the uterus. An ovum is a female reproductive cell.varies are oval-shaped endocrine system glands, the group of glands that produce a variety of hormones human body needs to function appropriately. Ovaries are found in females, one on each side of the uterus. An ovum is a female reproductive cell.
The ovaries have two main functions: 1  to release an egg approximately every 28 days as part of the menstrual cycle. 2  to release the female sex hormones, oestrogen and progesterone, which play an important role in female reproduction.