Expliquer les differents roles joues par les micro-organises qui colonisent l'intestin humain

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Sperm pass through the and connect to a short ejaculatory duct. vas deferens prostrates seminiferous tubules none of the above

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems