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TitleDescriptionSubjectCollection
51 Pseudoglandular period of developing lung (human, embryo)Stain: Trichrome (Goldner). Cross-sectioned future bronchial tubes (1) of varying sizes, note the apical position of the nuclei with light-stained basal parts (glycogen). The surrounding mesenchyme condenses (↓) around the epithelium and in the neighbourhood small blood vessels (*) are present. At...Lung development; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
52 Pseudoglandular period of developing lung (human, embryo)Stain: Trichrome (Goldner). Cross-sectioned future bronchial tubes (1) of varying sizes, note the apical position of the nuclei with light-stained basal parts (glycogen). The surrounding mesenchyme becomes condensed (↓) around the epithelium and in between small blood vessels (*) are present.Lung development; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
53 Survey of cross-section through larynx-esophagus (human)Stain: Hematoxylin and bordeaux light. X = lumen of larynx (middle part); ↑ = esophagus (below) with an undulating mucosa covered with squamous epithelium. Elastic arythenoid cartilage (1); thyreoarythenoid muscle (2); thyroid cartilage (3); hyoid muscle (4).Arythenoid cartilagesPoja Histology Collection - Respiratory System Subset
54 Nostril area of nasal vestibulum - cutaneous region - humanStain: Azan. Slightly keratinized squamous epithelium (1) with thin red cornified layer; (2) hair follicles; (3) vibrissae and (4) associated sebaceous glands. At the bottom skeletal muscle fibers; (5) transverse part of the musculous nasalis; (6) connective tissue.Poja Histology Collection - Respiratory System Subset
55 Survey nasal septum (dog)Stain: Hematoxylin and eosin. The nasal septum consists of a cartilage skeleton present as one long (1, cartilago vomeronasalis) and two short plates (2, cartilago septi nasi) with centrally dark-stained areas of chondrocytes. Below, the distal tip is covered with keratinized stratified squamous epi...Squamous stratified epithelium; Nasal vestibulum; Venous sinusoids; Venous plexus; Swell bodiesPoja Histology Collection - Respiratory System Subset
56 Developing conchae in a frontal section of head (pig, fetus)Stain: Azan. The fetal conchae develop like a branched gland (1) within the blue-stained trabecular bone (2) of the future skull. The fetal skin (3) is present at the top and bottom. Groups of cheek musculature (4) in middle left and right side. A broad sleeve of chin muscles below (5). The developi...Conchae nasales; Trabecular bonePoja Histology Collection - Respiratory System Subset
57 Gross scheme of a lung lobule and its vascularization (human)Scheme of branching of intrapulmonary bronchus. A small intrapulmonal bronchus with cartilage rings (1) divides into bronchioli (2), at (3) the terminal bronchioli that continues into respiratory bronchioli (4) followed by alveolar ducts (5) and at (6) the alveoli. A respiratory bronchiolus with alv...Intrapulmonary bronchus; Bronchioli; Alveolar ducts; Lymphatic plexus; Visceral pleuraPoja Histology Collection - Respiratory System Subset
58 Olfactory mucosa in the nose (dog)Stain: Iron Hematoxylin and eosin (Heidenhain). The pseudostratified epithelium of the olfactory mucosa contains sensory cells, support cells and basal cells. The upper darker stained nuclei (1) belong to the supporting (sustentacular) cells showing a dark apical line (↑) at the top. Below lighte...Bowman glands; Olfactory glands; Olfactory mucosa; Pseudostratified epitheliumPoja Histology Collection - Respiratory System Subset
59 Olfactory gland (Bowman) in olfactory region of concha (human)Electron microscopy. Beneath the olfactory epithelium tubuloalveolar glands of Bowman (1) are found containing cells that produce dense secretion granules arranged around a large lumen (*) with greyish secretion product. These cells produce a serous fluid in which odoriferous substances are dissolve...Olfactory epithelium; Bowman glands; Olfactory glands; Secretion granulesPoja Histology Collection - Respiratory System Subset
60 Olfactory epithelium in the nose (human)Electron microscopy. At the top (lumen) cross-sections of olfactory bulbs (1) (vesicles) with cilia/basal bodies. Sustentacular (supporting) cells (2) exhibit numerous microvilli in the lumen, their cytoplasms contain many dispersed mitochondria and in the lower half aggregations of endoplasmic reti...Olfactory epithelium; Olfactory vesiclePoja Histology Collection - Respiratory System Subset
61 Alveolar sac in the lung (human)Stain: Azan. Characteristic alveolar tips (arrows) of neighbouring thin-walled alveoli (1). The tips contain elastin masked by collagen (blue-stained). At (2) small pulmonary arteries.Alveolar tipsPoja Histology Collection - Respiratory System Subset
62 Capillary system of lung alveoli (cat)Stain: specimen injected with trypan blue in gelatin via the pulmonary system. In a tangential view the blue-stained dense capillary plexus surrounding each alveolus is well depicted.Poja Histology Collection - Respiratory System Subset
63 Capillary system of an alveolus (cat)Stain: specimen injected with trypan blue in gelatin via the pulmonary system. In a tangential view the blue-stained dense capillary plexus of one alveolus is well shown.Poja Histology Collection - Respiratory System Subset
64 Type II alveolar cell in the lung (rat)Electron microscopy. At the top the alveolar space (1) is lined by a type II alveolar cell (pneumocyte II) (2) with blunt microvilli. In the cytoplasm the characteristic electron-dense multilamellar bodies (*) and light-stained swollen mitochondria are present. The lamellar bodies are responsible fo...Pneumocyte I; Pneumocyte II; Alveolar cell type I; Alveolar cell type II; Multilamellar bodies; Interstitial cellsPoja Histology Collection - Respiratory System Subset
65 Bullous emphysema of the lung (honeycomb lung, human, adult)Macroscopy of the left lung showing large apical bullae (3) due to total destruction of all alveoli leaving remnants of the covering pleura. (2) indicates small bullae of foci of destroyed lobules with permanent enlargement of the air spaces and (1) points to spots of anthracosis in less-affected lu...Macroscopy; Honeycomb lung; Interstitial fibrosis; Hamman-Rich SyndromePoja Histology Collection - Respiratory System Subset
66 Elastin in alveolar tip in lung tissue (human, adult)Immuno-electron microscopy (embedded in Lowicryl HM 20). The amorph elastin (E) appears pale after embedding in this type of resin, but is antibody-labeled with electron-dense gold particles of 10 nm. (Col) indicate bundles of collagen fibers which are intermingled with swollen cytoplasmic extension...Alveolar cell type I; Myofibroblast; Immuno-electron microscopy; Immuno-stainingPoja Histology Collection - Respiratory System Subset
67 Scheme survey frontal section of larynx (human)Stain: Azan. A pseudostratified epithelium covers the mucosa of the laryngeal cavity and vestibulum. At the vocal fold edge (3) the epithelium appears to be nonkeratinizing squamous. The connective tissue is rigidly attached to this edge and merges into the vocal ligament (dense elastic) and vocal m...Vocal ligament; Laryngeal glands; Ventricular foldPoja Histology Collection - Respiratory System Subset
68 Pseudoglandular period of developing lung (human, embryo, low magnification)Stain: Hematoxylin and eosin. The two future lung lobes contain many cross-sectioned future bronchial tubes (1). Note in these epithelial cells the apical position of the nuclei with light-stained basal parts (glycogen). The surrounding mesenchyme becomes more condensed (↓) around the epithelium a...Lung development; Visceral pleura; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
69 Terminal sac period of developing lung (human, fetus, low magnification)Stain: Hematoxylin and eosin. At the right cross-sections of a large bronchus (1) with cartilage rings (2). Close to them a pulmonary artery (3), and a bronchiolus (4) without cartilage. (5) indicates a respiratory bronchiolus. Most alveoli are not inflated, the numerous dilated spaces (6) are saccu...Lung development ; Terminal sac period; Respiratory bronchioliPoja Histology Collection - Respiratory System Subset
70 Olfactory vesicle (bulb) in the nose (gerbil)DUPLICATE RECORD - FOR DELETION Electron microscopy. A distinct olfactory bulb (1, vesicle) with horizontally extended cross-sectioned cilia (*) and basal bodies (↑) is surrounded by numerous microvilli and free olfactory cilia. Close to the first bulb a second one is about to protrude above th...Olfactory epithelium; Olfactory vesiclePoja Histology Collection - Respiratory System Subset
71 Ventricular fold (plica ventricularis) (human)Stain: Azan. On top pseudostratified epithelium (1). Lamina submucosa with predominantly mucous glands (3), fat cells (4) and blood vessels. The lamina propria also contains lymphoid follicles (2) with a germinal center (immune protection).Laryngeal glands; Ventricular fold; Seromucous glandsPoja Histology Collection - Respiratory System Subset
72 Survey of a centrilobular lung emphysema: section of an lobule (human, adult)Stain: Hematoxylin and eosin. The enlargement of large areas of the air spaces (X) is evident due to destruction of the walls of alveoli throughout the lobule.Poja Histology Collection - Respiratory System Subset
73 Olfactory epithelium in the nasal cavity (mammals)Scheme electron microscopy. Four olfactory bulbs (1, vesicles) with radially sprouting cilia are present at the surface of the epithelium. Their slender cell bodies (2, bipolar neurons) are flanked by sustentacular (supporting) broad cells (3) whose apices are filled with well developed organelles, ...Pseudostratified epithelium; Olfactory epithelium; Basal cells; Olfactory vesicle; Bipolar neuronPoja Histology Collection - Respiratory System Subset
74 Keratin staining of bronchus epithelium (human, adult)Stain: Anti-keratin-5-7-14-19 (OVTL 12/5 monoclonal antibody with immunoperoxidase staining on frozen sections). The pseudostratified epithelium (1) is stained keratin-positively (brown product) as well as the epithelial derivates such as the bronchial glands (2) and their excretory ducts (3). Other...Bronchial epithelium; Keratin antibodies; Tumor diagnosisPoja Histology Collection - Respiratory System Subset
75 Keratin staining of bronchus epithelium (human, adult)Stain: Anti-keratin-5-7-14-19 (OVTL 12/5 monoclonal antibody with immunoperoxidase staining on frozen sedctions). The pseudostratified epithelium (1) reacts positively (brown-red product), the nuclei of the basal cells are well visible (arrows). Other structures react negatively (blue stain) such as...Tumor diagnosis; Bronchial epithelium; Lung parenchym; Keratin antibodiesPoja Histology Collection - Respiratory System Subset
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