Reproduction is one of the basic functions among all living organisms. The process varies from simple cellular division in case of unicellular bacteria to the very complex process of development of organs in higher animals. Development of the lungs takes a special place in the development of the fetus. Development of the lungs takes place in five phases. They are: Embryonic phase Pseudoglandular phase Canalicular phase Terminal saccular phase Alveolar phase

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Chapter 10, Problem 2RQ

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Introduction:

Reproduction is one of the basic functions among all living organisms. The process varies from simple cellular division in case of unicellular bacteria to the very complex process of development of organs in higher animals. Development of the lungs takes a special place in the development of the fetus. Development of the lungs takes place in five phases. They are:

Embryonic phase

Pseudoglandular phase

Canalicular phase

Terminal saccular phase

Alveolar phase

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