The thymus is positioned in the upper chest cavity above the heart. Thymus. The thymus gland is the main organ of the lymphatic system. Located in the upper chest region, the primary function of this gland is to promote the development of specific cells of the immune system called T lymphocytes. T lymphocytes or T-cells are white blood cells that protect against foreign organisms (bacteria and viruses) that have managed to infect body cells.
How long does it take for the Earth to rotate on its own axis ? The time it takes the Earth to rotate once is called a day (24 hours). The actual rotation time is a little less, about 23 hours and 56 minutes. Why do we have Day and Night?
It's not perfectly clear whether you are asking about the earth's rotational velocity around its axis, or the velocity of its revolution around the sun. Regarding its axis, the earth rotates roughly 465.1 meters per second, using earth's sidereal rotational period in the calculation. The orbital velocity of the earth is about 29,783 kilometers per second. Answer It takes 365 days ,6 hours ,9 minuites ,and 9.54 second to make full orbit.