Answer:
The cardiovascular system pumps blood from the heart to the lungs to get oxygen. The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over.
There are 5 main types of family planning methods:
Barrier methods, which prevent pregnancy by keeping the sperm from reaching the egg.
Hormonal methods, which prevent the woman’s ovary from releasing an egg, make it harder for the sperm to reach the egg, and keep the lining of the womb from supporting a pregnancy.
IUDs, which prevent the man’s sperm from fertilizing the woman’s egg.
Natural methods, which help a woman know when she is fertile, so that she can avoid having sex at that time.
Permanent methods. These are operations which make it impossible for a man or a woman to have any children.
