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The aorta terminates at the level of the lumbar vertebra 4, where it branches into the left and right common iliac arteries. Those divide further into the external and internal iliac arteries.
Yes, it can be dangerous, most people think that hyperventilation is due to getting little oxygen, but its not, hyperventilation is caused by having to much oxygen, that is why when putting a paper bag over your mouth helps, because you are breathing back in all the carbon dioxide that you exhaled, and this helps to balance out the oxygen. Hyperventilation can cause you to pass out.
Tachypnea (tachy = fast + pnea = air) is breathing too fast and shallow. Hyperventilation (hyper = a lot + ventilation = breathing) is rapid, deep breaths because of anxiety or panic. Dyspnea (dys = difficult + pnea = air) is when taking a breath brings on discomfort. Dyspnea is a symptom. Tachypnea/hyperventilation are signs.
Actually, No. Hyperventilation causes Respiratory Alkalosis. This is can be seen by ABG values of an increased pH and a decreased PaCO2 because where the person is breathing so quickly, they are blowing off the CO2 and retaining more O2.
Because hyperventilation clears out more of the carbon dioxide out of your system, and it's the build-up of CO that controls your breathing reflex. Do note that hyperventilating is a Bad Idea, particularly when diving. Lack of oxygen is what knocks you unconscious, but it's the build up of CO which forces you to breathe.
(averted can mean avoided or turned away) "He averted a collision with the bus by veering onto the sidewalk." "Hopefully the government has averted another economic calamity." "As the gory scene in the movie began, she averted her eyes."
When a person is hyperventilating, the PCO2 decreases. This is because a person is breathing enough to expel the CO2 out of the lungs making it decrease.
because you just can
Because you're re-breathing exhaled air - every time you breath the same air in, you're taking in some of the remaining oxygen, and replacing it with exhaled CO2
well that's not true.
you give your lungs less time to absorb the oxygen in the air because you breath it out immediately.
When someone has a panic or anxiety attack, it's too easy to hyperventilate. This just aggravates the condition. By breathing into a paper bag, the person is forced to rebreathe some of his/her own carbon dioxide, preventing hyperventilation and easing some of the symptoms of the attack.