Oviducts

Definition

Oviducts, also known as fallopian tubes, are narrow ducts that transport ova from the ovaries to the uterus. They are the site where fertilization typically occurs when a sperm meets an egg.

5 Must Know Facts For Your Next Test

1. Oviducts are about 10-12 cm long and play a crucial role in human reproduction.
2. Each oviduct has three main parts: the infundibulum, ampulla, and isthmus.
3. The ampulla is the most common site of fertilization within the oviducts.
4. Cilia lining the inner surface of the oviducts help move the ovum towards the uterus.
5. Blockage or damage to the oviducts can lead to infertility or ectopic pregnancies.

Review Questions

• What are the primary functions of oviducts in human reproduction?
• Where does fertilization most commonly occur within the oviducts?
• What role do cilia play in the function of oviducts?

Related terms

Uterus: The organ in female mammals where a fertilized egg implants and develops into a fetus.

Ovaries: The organs that produce ova (eggs) and secrete female sex hormones such as estrogen and progesterone.

Cilia:

Microscopic hair-like structures that line certain cells and help move substances across their surfaces, including moving an ovum through an oviduct.