Retake exam Essay Example | Topics and Well Written Essays - 1000 words

Retake exam - Essay Example However, increased activity leads to opening of air passages for more air. This leads to bronchodilation. 23. An infant born prior to 32 weeks gestation is likely to suffer from respiratory distress, a condition in which following the first breath the child is unable to re-inflate the lungs. What product is normally produced by the lungs to keep the lungs from collapsing upon themselves? 24. At about 34 weeks gestation specialized cells within the lungs begin to produce a lipid-rich detergent-like fluid that aids in maintaining inflation of the lungs. What cell are responsible for producing the fluids Compliance affects the expansion of the lung and hence only affects inspiration as reduced oxygen enters the lung. Expiration is not affected. Inspiration is only affected as the lung gets stiffer making it difficult for acquisition of oxygen. The law shows that indirect proportionality does not exist between gas and partial pressure. However, the law states that a gas that dissolves in any given liquid directly relates to the partial pressure. Breathing is a crucial process in human. In human, the action involves breathing in and out. This is accomplished due to the variation in pressure within the thorax as compared to the outside. The process also requires the use of muscles. The most essential muscles for the process are intercostals muscles located between the ribs (â€Å"Mechanism of Breathing 1†). Once human inhale the muscles and diaphragm contacts to expand the chest capacity. This causes the diaphragm to flatten. As a result, it moves downwards, and the intercostals muscles move the rib cage upwards and out. This significantly alters the air pressure. The increase in size leads to a reduction in the internal air pressure (â€Å"Mechanism of Breathing 1†). On the other hand, air from the outside moves into the lungs to equalize the pressures. In exhaling, the reverse takes place. The diaphragm together with the muscles relaxes