The Health Education Assets Library (HEAL) is a collection of over 22,000 freely available digital materials for health sciences education. The collection is now housed at the University of Utah J. Willard Marriott Digital Library.
TO
Filters: Collection: "ehsl_heal"
| Title | Description | Subject | Collection | ||
|---|---|---|---|---|---|
| 226 |
 |
Pseudoglandular period of developing lung (human, embryo, low magnification) | Stain: Trichrome (Goldner). Cross-sectioned future bronchial tubes (1) of varying sizes. Note the apical position of the nuclei in these epithelial cells with light-stained basal parts (glycogen). The surrounding mesenchyme becomes more condensed (↓) around the epithelium and in between numerous ... | Lung development; Visceral pleura; Pseudoglandular period; Bronchial tubes; Mesenchyme | Poja Histology Collection - Respiratory System Subset |
| 227 |
 |
Pseudoglandular-canalicular period of developing lung (human, fetus, low magnification) | Stain: Azan. A future lung lobe with cross-sectioned larger bronchi (1) in close association with islets of future smaller bronchial tubes (*). Around the larger bronchi several cartilage structures (↓) are already present. Note that the mesenchyme around the tubes within the islets becomes more c... | Lung development; Visceral pleura; Pseudoglandular period; Canalicular period; Bronchial tubes; Mesenchyme | Poja Histology Collection - Respiratory System Subset |
| 228 |
 |
Pulp canal of tooth - longitudinal section; human, adult | Stain: Hematoxylin and eosin. Centrally three thick nerve bundles. In between blood vessel filled with erythrocytes. At the right side longitudinal course of slender thin-walled blood vessels (arterioles) which pass into thin-walled capillaries with a wide lumen. | oral cavity; pulp canal | Poja Histology Collection - Oral Cavity Subset |
| 229 |
 |
Pulp chamber of tooth - human, adult | Stain: Hematoxylin and eosin. Pulpal connective tissue is a special type of tissue (stromal tissue) with so-called stellate-shaped pulpal fibroblastic cells that produce growth factors, extracellular matrix including thin collageneous proteins. Blood vessels are small and thin-walled; macrophages an... | oral cavity; pulp chamber; pulp fibroblast | Poja Histology Collection - Oral Cavity Subset |
| 230 |
 |
Pulp stones in root of tooth - longitudinal section, human, adult | Stain: Hematoxylin and eosin. Left and right side dark stained dentin with a small light rim of predentin. Centrally pulp stones represent as free lying irregular calcifications. They are found diffusely distributed as spots or as thin strands following blood vessels and bundles of collagen fibers i... | oral cavity; pulp stone; diffuse calcifications | Poja Histology Collection - Oral Cavity Subset |
| 231 |
 |
Pulpo-dentinal complex - segment of a tooth; human, adult | Stain: Hematoxylin and eosin. At the pulp-dentin border the peripheral pulp appears to be a specialized odontogenic region composed of odontoblasts, a cell-free zone and a cell-rich zone. From left to right: dentin (note striation due to dentinal tubules); (uncalcified) light stained predentin. At t... | oral cavity; Tomes' Fibers; dentinal tubules; predentin | Poja Histology Collection - Oral Cavity Subset |
| 232 |
 |
Pulpo-dentinal complex in longitudinal section of tooth - damaged dentin, human, adult | Stain: Hematoxylin and eosin. If odontoblastic processes are damaged, (e.g., erosion, caries, etc.), the entire cell will degenerate, though it may be able to produce dentin. From left to right: - irregular course of dentinal tubules; - light stained (damaged) area contain no tubules; - pulp connect... | oral cavity | Poja Histology Collection - Oral Cavity Subset |
| 233 |
 |
Pulpo-dentinal complex in longitudinal section of tooth - secondary dentin, human, adult | Stain: Hematoxylin and eosin. From left to right: - dentinal tubules as fine striation in dentin; - vertical course of incremental lines (von Ebner); - a darker stained broad zone of secondary dentin; - pulp chamber with crowding of odontoblasts close to secondary, newly formed dentin; - connective ... | oral cavity; secondary dentin | Poja Histology Collection - Oral Cavity Subset |
| 234 |
 |
Pulpo-dentinal complex of the tooth (human, adult). | Stain: Hematoxylin and eosin. At the pulpo-dentinal border the peripheral pulp appears to be a specialized odontogenic region composed of odontoblasts, a cell-free zone and a cell-rich zone; from left to right: Dentin (note striation due to dentinal tubules). (Uncalcified) Light stained predentin. A... | oral cavity; Tomes' Fibers; dentinal tubules; predentin | Poja Histology Collection - Oral Cavity Subset |
| 235 |
 |
Respiratory bronchiolus (human) | Stain: Hematoxylin and eosin. A longitudinal section shows the lumen of a respiratory bronchiolus (1) with an irregular lining. It is covered by low columnar-cuboidal cells, a few pouches within the same lumen are lined by thin alveolar epithelium as found in the surrounding alveoli (2). Thin arrows... | Respiratory bronchiolus; Columnar epithelium; Cuboidal epithelium; Clara cells; Alveolar epithelium | Poja Histology Collection - Respiratory System Subset |
| 236 |
 |
Respiratory bronchiolus (human) | Stain: Azan. The lumen (1) shows an irregular lining. It is covered by low columnar-cuboidal cells (→). Alveolar pouches (*) within the same lumen are lined by thin alveolar epithelium as found in the surrounding alveoli (2). At (5) small patch of smooth muscle, (4) macrophages with phagocytized c... | Respiratory bronchiolus; Columnar epithelium; Cuboidal epithelium; Alveolar epithelium | Poja Histology Collection - Respiratory System Subset |
| 237 |
 |
Respiratory bronchiolus (mouse) | Stain: Hematoxylin and eosin. The lumen (1) shows an irregular lining and is covered by low columnar-cuboidal cells (↓), locally disrupted by a few areas with thin alveolar epithelium as found in the surrounding alveoli (2). Thick arrows point to a row of light-stained Clara cells. At (*) discont... | Respiratory bronchiolus; Columnar epithelium; Cuboidal epithelium; Clara cells; Alveolar epithelium | Poja Histology Collection - Respiratory System Subset |
| 238 |
 |
Respiratory epithelial cells bordering the olfactory region in the nose (human) | Electron microscopy. The five respiratory cells (1) show many cross-sectioned cilia (2) in the lumen. Basal bodies (arrow heads) are regularly arranged at the apex of these cells, and in between, short, slender microvilli. Electron-light cytoplasmic protrusions (3) between the cilia are olfactory bu... | Respiratory epithelium | Poja Histology Collection - Respiratory System Subset |
| 239 |
 |
Respiratory epithelial cells in the nasal concha (rat) | Scanning electron microscopy. Bushes of long cilia (1) are present on the top of the epithelial cells. In between clusters of microvilli-studded goblet cells (2) are visible. | Respiratory epithelium; Pseudostratified epithelium | Poja Histology Collection - Respiratory System Subset |
| 240 |
 |
Respiratory epithelium in the nasal septum (rat) | Electron microscopy. At the left pseudostratified epithelium (1) with ciliated columnar (light) cells and electron-dense basal cells (2). In the middle a wide venous capillary (3) with erythrocytes. At the lower part a serous area of a seromucous gland (4) with dark granules and well-developed rough... | Respiratory epithelium; Basal cells | Poja Histology Collection - Respiratory System Subset |
| 241 |
 |
Respiratory epithelium in the nasal vestibulum (rat) | Scanning electron microscopy. Note bushes of cilia (1) on the ciliary epithelium. In between areas of short microvilli-studded bulging or flattened goblet cells. Remnants of erythrocytes (2) are also found on top of ciliated cells. | Respiratory epithelium; Nasal vestibulum | Poja Histology Collection - Respiratory System Subset |
| 242 |
 |
Respiratory epithelium of trachea (human, adult, high magnification) | Stain: Azan. The red-stained pseudostratified epithelium contains cilia and light goblet cells (white droplets) and a distinct basement membrane that continues in the intense blue-stained lamina propria and the submucosa consisting of fibrous tissue of elastic and collagenous fibers. | Tracheal glands; Excretory duct; Perichondrium | Poja Histology Collection - Respiratory System Subset |
| 243 |
 |
Respiratory region of nasal vestibulum (human, higher magnification) | Stain: Azan. At the top pseudostratified, ciliated epithelium (1) with a distinct endoepithelial gland (2, pink-stained mucous cells). The proper lamina is cell-rich and draining ducts (3, enclosed by thicker blue-stained borders) and acini of the nasal glands (5) are present here as well as in the ... | Pseudostratified epithelium; Nasal glands; Seromucous glands; Endoepithelial glands | Poja Histology Collection - Respiratory System Subset |
| 244 |
 |
Root of tooth within osseous socket - cross-section; human, adult | Stain: Hematoxylin and eosin. From left to right: bundle bone of alveolus; oblique fibers of periodontal ligament with blood vessels (broad layer); flattened cementoblasts settled on a thin light rim of cementoid; darker stained acellular cementum, the so-called acellular extrinsic fiber cementum a... | oral cavity; acellular cementum | Poja Histology Collection - Oral Cavity Subset |
| 245 |
 |
Sagittal section through tooth buds in jaws during tooth development - human, embryo, 6 weeks; low magnification | Stain: hematoxylin and eosin. At the top the upper jaw (maxilla) opposite the lower jaw (mandible). At the right side part of the tongue in the oral cavity. Arrows point to epithelial proliferations (future tooth bud formation) that are surrounded by condensation of mesenchymal cells (neural crest m... | oral cavity; tooth bud; tooth development | Poja Histology Collection - Oral Cavity Subset |
| 246 |
 |
Scheme of circumvallate papillae of the tongue (human, adult) | 1. (circum)vallate papilla; 2. non-keratinized stratified squamous epithelium; 3. taste bud; 4. serous gland (von Ebner); 5. draining duct (of serous gland); 6. lingual muscle | oral cavity; von Ebner; circumvallate papillae | Poja Histology Collection - Oral Cavity Subset |
| 247 |
 |
Scheme of compound glands in the oral cavity - human, adult | A. parotid gland (serous gland) magnification x 350 objective. B. sublingual gland (mucous part) magnification x 350 objective. C. sublingual gland (mixed part) magnification x 350 objective. D. simplified scheme of compound serous/mucous gland. 1. myoepithelial cell; 2. serous acinus; 3. stri... | oral cavity | Poja Histology Collection - Oral Cavity Subset |
| 248 |
 |
Scheme of cross sectional tooth in alveolar bone - cat | A. Survey of tooth (in alveolar bone) magnification x 30 objective. B. Peripheral part of tooth (in alveolar bone) magnification x 300 objective. 1. radicular pulp; 2. odontoblast layer; 3. dentin (radial arranged dentinal tubules); 4. Tomes' granular layer; 5. cementum; 6. fibers of period... | oral cavity; alveolar bone | Poja Histology Collection - Oral Cavity Subset |
| 249 |
 |
Scheme of filiform and fungiform papillae of the tongue - human, adult | 5. filiform papillae; 6. fungiform papillae; 8. locally cornification on top of filiform papillae; 9. lingual muscle; 10. lingual glands | oral cavity; papillae | Poja Histology Collection - Oral Cavity Subset |
| 250 |
 |
Scheme of peripheral lung parenchym (human, adult) | (1) respiratory bronchiolus; (2) alveolar duct; (3) alveolar sac is a virtual sac formed by several alveoli, but continuous with the alveolar duct; (4) alveoli which end in small tips (↓) with elastin interwoven with collagen. | Alveolar duct | Poja Histology Collection - Respiratory System Subset |