Health Education Assets Library (HEAL)
 
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TitleDescriptionSubjectCollection
476 Scheme of electron microscopy of tertiary villus (human placenta, midpregnancy)(See also POJA-L1227). (A) Survey and (B) detail of a tertiary placental villus lined by the multinucleated syncytiotrophoblast cell (1) (STC). The apex shows protrusions and extensive microvilli of varying sizes (brushborder, 2). Nuclei are sectioned at different levels and the cytoplasm contains a...placenta; tertiary villi; placental barrier; electron microscopyPoja Histology Collection - Placenta
477 Scheme of filiform and fungiform papillae of the tongue - human, adult5. filiform papillae; 6. fungiform papillae; 8. locally cornification on top of filiform papillae; 9. lingual muscle; 10. lingual glandsoral cavity; papillaePoja Histology Collection - Oral Cavity Subset
478 Scheme of ileum with Peyers patches (gut-associated lymphatic tissue or GALT) (dog)Survey ileum (see also Digestive System: Ileum) A large amount of non-encapsulated diffuse lymphatic tissue or mucosa-associated lymphatic tissue (MALT) is located in the subepithelial lamina propria (e.g. respiratory passages, genitourinary tract). The gut-associated lymphatic tissues (GALT) are ...GALT; follicle; scheme; germinal centerPoja Histology Collection - Lymphatic Tissues and Organs Subset
479 Scheme of lingual tonsil ('lymphoepithelial tissue')Lingual tonsil (consisting of the accumulation of folliculi linguales). The root of the tongue contains invaginations or crypts or narrow caverns (3). In these crypts the ducts of the mucous glands (8) end up. The crypts are lined by multilayered, non-keratinizing squamous epithelium (2) and are sur...lingual tonsil; scheme; germinal center; folliclePoja Histology Collection - Lymphatic Tissues and Organs Subset
480 Scheme of lymph node (human)Lymph node: A. survey; B. detail subcapsular (or marginal) sinus 1. adipose tissue; 2. capsule; 3. afferent lymph vessel with valves (B); 4. subcapsular (or marginal) sinus; 5. germinal centre of a secondary lymphatic nodule (or follicle); 6. crescent or mantle zone indicated by cap of per...cortex; scheme; paracortex; germinal centerPoja Histology Collection - Lymphatic Tissues and Organs Subset
481 Scheme of palatine and pharyngeal tonsils ('lymphoepithelial tissues') (human)The palatine tonsils are covered by the multilayered, non-keratinizing squamous epithelium of the oral cavity (A-1). In contrast to the palatine and lingual tonsils, the epipharyngeal tonsil has a multilayered ciliated epithelium (respiratory-like epithelium, B-9). The Waldeyer's tonsillar ring i...germinal center; scheme; folliclePoja Histology Collection - Lymphatic Tissues and Organs Subset
482 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 ductPoja Histology Collection - Respiratory System Subset
483 Scheme of placental tissues (human)See the http://www.healcentral.org/http://library.med.utah.edu/healassets/content/collections/poja_placenta/POJA-L1227-FemReprOrg-Placenta-scheme+introduction Placenta.pdf>detailed Legends for this slide (PDF file).placenta; uterus; chorionic villi; decidua; trophoblast; cytotrophoblastPoja Histology Collection - Placenta
484 Scheme of reticular tissue in lymph nodeLymph node stroma does not contain stromal cells but instead the reticular meshwork is build by reticular cell types, macrophages and lymphoid cells and myeloid cells. Route (A) in the scheme represents morphological differentiation path from B lymphocytes to plasma cells. 1 endothelial ce...reticular tissue; scheme; follicle; germinal centerPoja Histology Collection - Lymphatic Tissues and Organs Subset
485 Scheme of secondary lymphatic nodule in spleen (human)A. histological impression of a follicle or nodule B. outline of impression 1. pulpa artery; 2. central artery ; 3. lymphatic sheath; 4. lymphatic nodule; 5. thymus-dependent area (periarteriolar lymphatic sheath or PALS), composed of Th subset lymphocytes; 6. mantle zone with mainly nave B l...white pulp; marginal zone; antigen presenting cell (APC)Poja Histology Collection - Lymphatic Tissues and Organs Subset
486 Scheme of the epiglottis (human, adult)The laryngeal side of the epiglottis (1) is covered with respiratory epithelium, while the lingual side (2) is similar to the oral cavity epithelium (squamous type). The transitional zone to respiratory epithelium is marked by (3). The scaffold consists of elastic cartilage (4). Seromucous laryngea...Laryngeal glands; Oral cavityPoja Histology Collection - Respiratory System Subset
487 Scheme of the medullar changes in lymph node after antigen stimulationUpon antigenic stimulation the reticular cells that line the medullar sinusoids start to phagocytise the antigens (i.e. infective agents) and change from small tiny stellate cells into swollen large cells due to phagocytosis. They detach from the medullar sinus wall. After ten days the situation has...follicle; antigen stimulation; scheme; germinal centerPoja Histology Collection - Lymphatic Tissues and Organs Subset
488 Scheme of the spleen (human)Spleen: A. general diagram; B. adult; C. senium 1. capsule of dense irregular connective tissue with few elastic and smooth muscle fibers (it varies with the species); 2. trabecula (septum); 3. trabecular artery derived from the splenic artery; 4. trabecular vein; 5. when the pulpa artery ...white pulp; red pulpPoja Histology Collection - Lymphatic Tissues and Organs Subset
489 Scheme of the thymus during ageing (human)Physiological changes in the course of human ageing lead to almost complete degeneration of the thymus (age involution). Both cortex and medulla become depleted of lymphocytes, and the distinction between both layers gradually becomes less. The remaining reticular meshwork of connective tissue is gr...thymus involution; thymus development; thymus age; lymphoid tissuePoja Histology Collection - Lymphatic Tissues and Organs Subset
490 Scheme of the thymus medulla (human)A-B: medullar epithelioreticular cells; C-D-E: development stages of thymic corpuscles (or Hassall bodies) (1): branching (-->) epithelioreticular cells in the medulla forming a meshwork (cytoreticulum) that normally is populated by thymocytes; (2): specialized epithelioreticular cells (2) often...thymic corpuscle; Hassall ; epithelioreticular cells ; lymphoid tissuePoja Histology Collection - Lymphatic Tissues and Organs Subset
491 Scheme of tongue papillae and foliate papillaeA. Circumvallate papillae (tongue, human, adult) magnification x 35 objective. B. Foliate papillae (tongue, rabbit) magnification x 85 objective. C. Taste bud in foliate papilla (tongue, rabbit) magnification x 750 objective. 1. (circum)vallate papilla; 2. non-keratinized stratified squamous epit...oral cavity; von Ebner; circumvallate papillae; foliate papillaePoja Histology Collection - Oral Cavity Subset
492 Scheme of tongue papillae and taste budsB. Scheme of foliate papillae of the tongue (rabbit) magnification x 85 objective. C. Scheme of taste bud in foliate papilla of the tongue (rabbit). 2. non-keratinized stratified squamous epithelium; 3. taste bud; 4. serous gland (von Ebner); 5. draining duct (of serous gland); 7. foliate papil...oral cavity; von Ebner; foliate papillaePoja Histology Collection - Oral Cavity Subset
493 Scheme of tooth development (human)A. Survey of tooth germ (bell stage, embryo) magnification x 35 objective. B. Formation of enamel and dentin (bell stage, embryo) magnification x 350 objective. 1. pulp organ; 2. odontoblasts; 3. mantle predentin; 4. dentin; 5. enamel; 6. initial enamel; 7. inner dental epithelium (ameloblasts);...oral cavity; dental lamina; bell stagePoja Histology Collection - Oral Cavity Subset
494 Scheme of tracheaC. Trachea (human, adult) magnification x 7.5 objective). D. Trachea (human, adult, detail of rectangle in C) magnification x 85 objective. (12) pseudostratified ciliated epithelium; (13) seromucous tracheal glands; (14) condensed layer of elastic fibers at the border of lamina propria and submu...Pseudostratified epithelium ; Fibroelastic membrane; AdventitiaPoja Histology Collection - Respiratory System Subset
495 Scheme of trachea (human, adult)On top pseudostratified ciliated epithelium (1) with goblet cells followed by a condensed layer of elastic fibres (2) and the transition (*) to seromucous tracheal glands (3) close to the edge of the perichondrium (4) of hyaline cartilage (5).Pseudostratified epithelium ; PerichondriumPoja Histology Collection - Respiratory System Subset
496 Scheme survey dorsal surface of tongue - human, adult1. foliate papillae (rudimentary in human); 2. circumvallate papillae; 3. foramen cecum; 4. palatine tonsils; 5. filiform papillae; 6. fungiform papillae; 7. epiglottis; 11. lingual tonsilsoral cavityPoja Histology Collection - Oral Cavity Subset
497 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
498 Scheme survey lip - human, adult1. red (transitional) zone; 2. keratinized stratified squamous epithelium (outer side); 3. non-keratinized stratified squamous epithelium (inner side); 4. hair shaft; 5. hair follicle; 6. sebaceous gland; 7. cross-section of circumoral muscle; 8. labial glands with draining ducts; ...oral cavityPoja Histology Collection - Oral Cavity Subset
499 Scheme survey tooth (longitudinal section; human; canine)Canine tooth in osseous alveolus.oral cavity; pulp canalPoja Histology Collection - Oral Cavity Subset
500 Scheme survey uvula - soft palate, human, adult1. nasal side - pseudostratified columnar ciliated epithelium (respiratory epithelium); 2. oral side - non-keratinized stratified squamous epithelium; 3. mixed glands (pharyngeal glands); 4. uvular muscle; 5. mucous palatine glandsoral cavityPoja Histology Collection - Oral Cavity Subset
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