Coronary or Congenital heart disease is the result of reduced blood flow to the heart due to narrow valve or valve defects. This defects may be caused by build up of fatty deposits. So the statement you have given is TRUE.
Mike's intrapulmonary pressure must be lower than atmospheric pressure when he inhales and greater than atmospheric pressure when he exhales in order to maintain normal air flow during inhalation and exhalation when he is having one of his asthma attacks.
The pressure exerted by gases within the alveoli of the lungs is called as intrapulmonary pressure.
To secure the normal air flow, the pressure gradient increases as airway resistance also increases. The pressure gradient is the difference between intrapulmonary and atmospheric pressures.
During inhalation, the intrapulmonary pressure must decrease more than average so that air is carried into the lungs against a greater resistance. However, during exhalation, the intrapulmonary pressure must increase more than normal to move out the air against the same resistance.
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Answer: Limited room and no ribcage
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Explanation: The possible answer to the question lies in the turtle's shell. The shell, which evolved from ribs and vertebrae that flattened out and fused together, does more than keep the turtle safe from bites. When a turtle hibernates, it buries itself in cold water for up to five months. To survive, it has to change a lot of things about the way its body works. Some processes, such as fat burning, go anaerobic - or without oxygen - in a hibernating turtle. Anaerobic processes result in the build up of lactic acid, and anyone who has seen Aliens knows that too much acid isn't good for a body. The turtle's shell can not only store some lactic acid, but release bicarbonates (baking soda to the acid's vinegar) into the turtle's body. It's not just armor plating, it's a chemistry set.
It is, however, a fairly restrictive chemistry set. Without ribs that expand and contract, the turtle has no use for the lung and muscle set-up that most mammals have. Instead it has muscles that pull the body outwards, towards the openings of the shell, to allow it to inhale, and more muscles to squish the turtle's guts against its lungs to make it exhale. The combination makes for a lot of work, which is especially costly if every time you use a muscle your body's acid levels go up and oxygen levels go down.
Compare this to the relatively cheap butt breathing. Sacs next to the cloaca, called bursa, easily expand. The walls of these sacs are lined with blood vessels. Oxygen diffuses through the blood vessels, and the sacs are squeezed out. The entire procedure uses little energy for a turtle that doesn't have a lot to spare. Dignity has to play second-fiddle to survival sometimes.
<span>Being in the water is ideal because your body is almost weightless. Lightening your body reduces the pressure on joints or fractured bones. This way, you can gain more support from your limbs and start walking more quickly. The warmth of the water also helps to relax the muscles and allows you to gain muscle amplitude. <span>You feel less pain and you find little by little strength and balance.</span></span>
