less than the atmospheric pressure
Vessels with low or negative pressure primarily include veins and venules in the circulatory system. These vessels carry deoxygenated blood back to the heart and rely on surrounding muscle contractions and one-way valves to facilitate blood flow, as they operate under much lower pressure compared to arteries. Additionally, the thoracic cavity can create negative pressure during respiration, aiding venous return. In certain medical contexts, such as suction devices, negative pressure can also be generated artificially.
Negative pleural pressure typically ranges from -3 to -8 cm H2O during normal breathing, with larger negative pressures generated during forced inspiration. The negative pressure in the pleural space helps maintain lung inflation by creating a pressure gradient for air to flow into the lungs during inspiration.
you are under to much pressure
yes it does
Not much. You create slight changes in pressure when you breathe, but it's almost insignificant.
The diaphragm moves down when you breathe in, so your lungs will expand to take in as much oxygen as possible.
Yes, as much as possible.
Yes; it is possible but not likely.
The negative effects of peer pressure can include early use of substances and sexual experimentation before one is emotionally ready. Negative peer pressure can also effect self-esteem in harmful ways for the person trying to fit in.
It's possible, but much more likely there is a leak somewhere.
It is normal for fuel tanks to develop positive and negative pressure as the car operates and the temperature changes.
They wanted to keep as much control as possible.