1 Go to the Tools menu and select Export. 2  Name the file. 3  Examples might be: AddressBook-Thunderbird or ListName-Thunderbird and choose to save it to your Desktop. 4  Change the format to: Comma Separated. 5  Click the Save button. 6  Log into gmail.rider.edu and navigate to Contacts. Go to the Tools menu and select Export. 2  Name the file. 3  Examples might be: AddressBook-Thunderbird or ListName-Thunderbird and choose to save it to your Desktop. 4  Change the format to: Comma Separated. 5  Click the Save button. 6  Log into gmail.rider.edu and navigate to Contacts.
Full Answer. In addition to two upper chambers, the heart also has two lower chambers. The lower chambers are known as the left and right ventricles, which have a primary responsibility of pumping blood out of the heart. Separating the upper and lower chambers are different valves, which control the direction and rate of blood flow. A complete circulating cycle is defined as each instance the two atria bring in blood and the ventricles pump out blood.
The heart is a muscle. It has four chambers that pump blood. The upper two chambers are called the atria and the lower two chambers are called the ventricles.. The heart is really two pumps that work together to move blood through the body.The right-sided pump fills with blood returning from the body and pumps it to the lungs to receive oxygen.This right-sided pump is a thinner muscle than the left-sided pump because it only has to pump blood to the lungs. The left side of the heart receives blood from the lungs and pumps it out to all parts of the body.he heart is a muscle. It has four chambers that pump blood. The upper two chambers are called the atria and the lower two chambers are called the ventricles.. The heart is really two pumps that work together to move blood through the body.