I think what you are seeing is the nucleus. There is no pumping and pulling there but it is the primary organelle I the cell. It holds the DNA of the molecule.
the muscles near the veins help by their muscular contractions, they press on the vein and have a squeezing pumping action.
Vesicles
Systole is the phase of the cardiac cycle when the heart muscle contracts, pumping blood out of the chambers into the arteries. It is the period of time when the ventricles of the heart are actively squeezing and pushing blood into circulation.
atrial and ventricular systole occur at the same time
Oxygen will keep the heart efficiently pumping so blood can go throughout the body.
The calcium pump maintains a low concentration of Ca2+ in the cytoplasm, typically around 0.1 μM, while actively pumping Ca2+ out of the cell or into the sarcoplasmic reticulum to maintain cellular calcium homeostasis.
The structure and function relate because what the structure is made of infuences what the organ's function is. An example is that the heart is made of strong muscle cells. Therefore, it is fit to do the job of pumping blood around the body.
how to stop hand pumping
Pumping - My Heart - was created in 1976.
In the body, the main pumping organ is the heart.
pumping ironhttp://ironage.us/PumpingIron.mp3
The duration of Pumping Iron is 1.42 hours.