Answer:
An oocyte released from human ovary enters the oviduct as a result of wavelike motion of beating cilia present inside the oviduct.
Explanation:
- The ovum is released from the grafiaan follicle during the ovulatory phase of Menstrual cycle.
- It is caused by the increasing turgidity and contraction of smooth muscle fibres around the Graafian follicle.
- During ovulation the ovum is at secondary oocyte stage.
- Ovum released from the Graafian follicle is trapped by the fimbriae of the ampulla of fallopian tube.
- Then the ovum moves into the oviduct towards the uterus by peristalsis and ciliary action of the walls of oviduct which is made up of ciliated columnar epithelium.
