Extended sequences with explicit sex scenes, full frontal male and female nudity

A doctor performs a testicular ultrasound on a man's genitals

A man exposes his genitals while using a device to improve fertility.

A man and a woman seen washed full nude during a ritual

Two couples undress completely and have sex, the first one on a bed, the second one on a couch. They then swap partners. Full frontal and rear nudity of both men and women. Men's penises are erect and the scene is very explicit.

A man and a woman strip naked and have sex on a staircase. First the woman is atop, then he goes on her. Very explicit sex.

Considerable nudity, but the context is mostly more clinical than erotic.

A woman is seen lying naked on a bed...belly up. Her pubic hair is clearly visible as she attempts to maintain a position to facilitate fertility.