Development of the Human Lung

Learning Objectives:

Phases of Lung Development

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Derivation of lung elements

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"The pseudoglandular stage takes place..."

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"For branching to occur,"

"Cilia appear in the proximal..."

"Mesenchyme is necessary for epithelial..."

Canalicular Period 16-26 wk

Terminal Sac Period  26 wk →

"By 20 weeks,"

Primitive Saccule

Postnatal stage

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Characteristics of Mature Alveolus

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Development of Pulmonary Arterial Muscle

Control of Pulmonary Blood Flow

Hypoxic Pulmonary Vasoconstriction

Physical Influences on Lung Growth

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Physical Influences on Lung Growth

Physical Influences on Lung Growth

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Hormonal Influence on the Lung

Hormonal Influence on the Lung

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The Problem of Prematurity

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Neonatal Respiratory Failure

The lung is ignored only at your own peril!

DON’T HOLD YOUR BREATH!