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Carnegie Stage Section
T-4 spinal ganglion, anterior tertiary bronchus, apical posterior tertiary bronchus, cephalic edge of lower lobe of left lung, cephalic edge of mammary gland, extensor compartment of arm, heart prominence, horizontal fissure, iliocostalis muscle, left lobe of liver, longissimus muscle, middle lobe of right lung, neural arch, osteogenic layer, pectoralis major muscle, pericardial cavity, pleural cavity, pleuropericardial membrane, right atrioventricular (tricuspid) valve, right atrium, right primary bronchus, right venous valve, secondary interatrial foramen (foramen secundum), semispinalis muscle, subarachnoid space, superior hemi-azygos vein, upper lobe of left lung, upper lobe of right lung
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Carnegie Embryo #9325   |   Location: 17-2-3

Keywords: T-4 spinal ganglion, anterior tertiary bronchus, apical posterior tertiary bronchus, cephalic edge of lower lobe of left lung, cephalic edge of mammary gland, extensor compartment of arm, heart prominence, horizontal fissure, iliocostalis muscle, left lobe of liver, longissimus muscle, middle lobe of right lung, neural arch, osteogenic layer, pectoralis major muscle, pericardial cavity, pleural cavity, pleuropericardial membrane, right atrioventricular (tricuspid) valve, right atrium, right primary bronchus, right venous valve, secondary interatrial foramen (foramen secundum), semispinalis muscle, subarachnoid space, superior hemi-azygos vein, upper lobe of left lung, upper lobe of right lung

Source: The Virtual Human Embryo.