A Biology Question - About sex -nucleus,sperm or egg?

Question

Question is:
One method of contraception involves the surgical cutting of one of the structures on the diagram. On the diagram, draw an X to show which structure will be cut.

..and then there's a diagram of a SPERM making it's way through an EGG..the diagram also features the NUCLEUS of the egg.
ii.) Which is cut?
iii.) Suggest why this surgery is an effective method of contraception?
iv.) Give ONE disadvantage of this method of contraception.

Thanks alot.. I've been searching everywhere for the answer..
p.s. Honest I'm not being lazy!

- thanks alot, and yes thats it - the sperm, egg and nucleus of egg.
Some question that is...

Answer 1

Does the diagram show the entire male or female reproductive system?

The only things that are commonly surgically cut for contraceptive reasons are the fallopian tube in females and the vas deferens in males. The fallopian tube (or oviduct) moves eggs from the ovary into the uterus. The vas deferens allows sperm to travel from the testes into the urethra.

Cutting either one of these will prevent fertilization from happening.

The disadvantage of either method is that they aren't easily reversible.

Answer 2

Its hard to tell, since we can't see the diagram, but I'm thinking it would have to be the fallopian tube, through which the egg moves. (Sounds like its not a very helpful diagram, though!) The surgery would be effective because it would prevent any interaction between sperm and egg because egg would never make it to the uterus for fertilization or implantation.
Disadvantages (choose) its invasive surgery, and its difficult to reverse, and it has to be done on BOTH fallopian tubes to be effective.

Answer 3

What approximately heterosexual couples who can not reproduce? what approximately women who've had hysterectomy's? there are distinctive heterosexual couples who can not reproduce and that i'm specific they nevertheless have intercourse. How do you recognize that the clarification individuals are gay is a by way of a organic and organic disease. not that i'm asserting people who're gay have a disease yet in step with possibility scientifically there's a chemical imbalance that makes them sense fascinated in a similar intercourse. individuals are so closed minded and so unwilling to settle for what's unlike them. human beings would desire to enable bypass of their ego's.