According to the Bohr model, the wavelength of the light emitted by a hydrogen atom when the electron falls from a high energy (n = 4) orbit into a lower energy (n = 2) orbit.
A network of arteries and veins also carry blood throughout the body: Arteries transport blood from the heart to the body tissues. Veins carry blood back to the heart.ow the heart works. The heart is a large, muscular organ that pumps blood filled with oxygen and nutrients through the blood vessels to the body tissues. It's made up of: Four chambers. The two upper chambers, the atria, receive and collect blood.
You can eat right â¦ you can exercise. But despite doing all of these things, you still havenât done the number one thing that will protect your blood vessels. And thatâs critically important if you want to live a long and healthy life. When youâre young, your blood vessels are thick and flexible.They provide blood flow to your heart â keeping it pumping strong. And they deliver oxygen-rich blood to every single organ in your body. But by the time youâve hit your 40s, chances are slim that your arteries have the elasticity they had in their youth.tâs important to keep your arteries firm and flexible â so your heart and lungs can deliver oxygen-rich blood to your extremities, heart and brain. You can take the single most important step toward keeping your blood vessels strong, elastic and performing their job for years to come.