201 - 225 of 4,589
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TitleDescriptionSubjectCollection
201 EpinephrineIf a patient is on beta-blockers and experiences severe urticaria or anaphylaxis, often epinephrine does not work. Glucagon can be used in lieu of epinephrine, and generally 1 mg (regardless of body size) is given in the subcutaneous fatKnowledge Weavers Dermatology
202 EarThis image shows a semicircular canal in cross-section. It clearly differentiates the bony labyrinth filled with perilymph from the membranous labyrinth filled with endolymph. Here, bone is stained light purple. UCLA Histology Collection.Ear; Semi-Circular CanalUCLA Histology
203 PlacentaThe base of the placenta lies adjacent to the maternal endometrium which has decidual cells embedded in fibrinoid . Fibrinoid is also seen among the fetal villi . In this image the maternal blood space is evident. UCLA Histology Collection.PlacentaUCLA Histology
204 Central Nervous SystemProtoplasmic astrocytes like these are usually found in the gray matter. Note the many astrocytic processes of each cell. UCLA Histology Collection.astrocytes; Brain; Central Nervous systemUCLA Histology
205 Epithelium - ThyroidThe upper thyroid follicle in this image has an epithelium that is essentially squamous. This would represent an histologically hypoactive follicle. Shrinkage artifacts are present in the colloid. UCLA Histology Collection.UCLA Histology
206 Mucinous cystadenomaNeglected mucinous cystadenoma may become extremely large.Knowledge Weavers Human Reproduction
207 ProlactinomaProlactinomaKnowledge Weavers Pathology
208 Mature cystic teratoma - MicroscopicEctodermal tissue is usually most abundant and represented by: squamous epithelium and appendages, brain tissue, glia, retina, choroid plexus, and ganglia. Mesodermal tissue is represented by bone and cartilage. Endodermal tissue is represented by gastrointestinal and bronchial epithelium and glands...Knowledge Weavers Human Reproduction
209 Ear - External Ear CanalIdentify the secretory, contractile (myoepithelial cell), and connective tissue elements of this tissue section. Myoepithelial cells are special contractile cells found within the basal lamina of glands. Their contractions aid in expulsion of secreted products. Note that these secretory cells have c...external ear canalUCLA Histology
210 Cells / Organelles - AdrenalCells of the adrenal cortex whose nuclei are round, purple structures and whose cytoplasm is filled with lipid droplets. The cytoplasm of these cells also contains many cisternae of smooth endoplasmic reticulum, because these are steroid-secreting cells. UCLA Histology Collection.steroid-secreting cellsUCLA Histology
211 EyeThe iris extends forward from its junction with the ciliary body. The double-layered epithelium of the ciliary body continues onto the posterior surface of the iris. Iris color is determined by the number of melanocytes in the stroma. Note the iris root and the iris epithelium. UCLA Histology Collec...Eye; irisUCLA Histology
212 Punch biopsyI gently lift the punch without pinching it and thereby creating damage to the specimen, and then snip the fatty strand that connects the skin to the underlying fat and muscle.Knowledge Weavers Dermatology
213 SuturingWith the needle holders placed inside the long arm (needle bearing end) of V, andKnowledge Weavers Dermatology
214 Pubic licePubic lice. They are 1-2 mm diameter and are visible with the naked eye.Knowledge Weavers Dermatology
215 Head liceOn close inspection one could often see the adult lice as shown here.Knowledge Weavers Dermatology
216 Excision procedureThis demonstrates the 45 degree angle in cross-section.Knowledge Weavers Dermatology
217 Gastrointestinal TractThis medium magnification image of the muscularis externa illustrates the smooth muscle cells of the outer longitudinal muscle layer (shown in cross-section here). Identify the myenteric plexus containing enteric neurons (ganglion cells) and supporting cells (enteric glia). Within the circular muscl...Colon; gastrointestinal tract; Large intestineUCLA Histology
218 Epithelium - TracheaThe epithelium of the trachea is categorized as pseudostratified columnar with goblet cells. It is pseudostratified because, although all the cells contact the basal lamina, the basal cells do not reach the lumen. Cilia can be seen on most columnar cells. Two goblet cells are also evident. UCLA Hist...pseudostratified columnar epitheliumUCLA Histology
219 Respiratory SystemIn this small bronchus, the respiratory epithelium is less tall, with a thick basal lamina. The submucosa contains connective tissue, smooth muscle, and the mixed glands made up of serous and mucous components. UCLA Histology Collection.epithelium; Lung; respiratory epithelium; Respiratory SystemUCLA Histology
220 PituitaryIn this image of the pars distalis, which is stained with a special PAS-Trichrome preparation, the basophils and acidophils appear less intermingled. What hormones do these two cell types secrete into the sinusoids? UCLA Histology Collection.PAS-Trichrome; PituitaryUCLA Histology
221 Glands of GI TractThis image shows Kupffer cells, which are macrophages that are distinguished by their phagocytation of a particulate dye. Note the hepatocyte cords and the sinusoids which separate them. UCLA Histology Collection.Kupffer cells; LiverUCLA Histology
222 Connective TissueAt a higher power these plasma cells can be seen to have a basophilic cytoplasm, and an acentric nucleus with peripherally located clumps of heterochromatin. UCLA Histology Collection.Breast; Connective TissueUCLA Histology
223 SkinA somewhat oblique view of the base of a hair follicle showing the dermal papilla and various layers of the hair follicle. UCLA Histology Collection.Connective TissueUCLA Histology
224 TestisSeminiferous tubules, but not healthy. Also, perhaps one Leydig cell. UCLA Histology Collection. Check with MicevychtestisUCLA Histology
225 Acute pyelonephritisAcute pyelonephritisKnowledge Weavers Pathology
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