Question

What are the two mechanisms that move the oocyte through the uterine tube?

1) Peristalsis and ciliary action
2) Diffusion and active transport
3) Gravity and osmosis
4) Endocytosis and exocytosis

Answer 1

The two mechanisms that move the oocyte through the uterine tube are peristalsis and ciliary action.

Step-by-step explanation:

The two mechanisms that move the oocyte through the uterine tube are:

1. Peristalsis: High concentrations of estrogen induce contractions of the smooth muscle in the uterine tube, resulting in coordinated movements that sweep the surface of the ovary and pelvic cavity. This helps pull the oocyte-granulosa cell complex into the interior of the tube.
2. Ciliary Action: The cilia that line the outside and lumen of the uterine tube beat more strongly in response to high estrogen concentrations. The beating cilia generate a current flowing toward the uterus, slowly moving the oocyte in that direction.