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1 Eye - Rods and ConesRod and cone photoreceptors have their cell bodies in the outer nuclear layer. Between these cell bodies and the retinal pigment epithelium are the photoreceptor inner segments (where proteins are synthesized) and the outer segments (the light sensitive portion). The inner segments of cones are cone...UCLA Histology
2 UterusThis relatively brief phase of the endometrial cycle consists of shrinkage of the endometrium and intraendometrial hemorrhage and fragmentation. The myometrium is located to the left. A higher magnification of the ischaemic endometrium is shown in image 226-10-1. UCLA Histology Collection.ischaemic endometrium; UterusUCLA Histology
3 KidneyIn this section through the renal papilla, identify the terminal collecting tubules (lined by columnar epithelium). Also note a straight segment of the loop of Henle, many thin loops of Henle, and cross-sections of the vasa recta. UCLA Histology Collection.Kidney; renal papilla; terminal collecting tubulesUCLA Histology
4 BreastThis active, lactating breast contains a large number of lobules of tightly packed alveoli. The connective tissue of the interlobular elements is highly compressed. Note the lactating glands, the excretory duct and some fat. UCLA Histology Collection.Breast; lactating breastUCLA Histology
5 SuturingAfter placing four throws to create a square knot, the suture is then cut just above the knot.Knowledge Weavers Dermatology
6 Bone - Haversian SystemHaversian systems can be seen well in this image of dried compact bone. Haversian or central canals and concentrically arranged osteocytes are also visible. UCLA Histology Collection.UCLA Histology
7 SuturingThe suture is then tightened by crossing the non-dominant (left) hand over the dominant (right) hand.Knowledge Weavers Dermatology
8 SuturingThis demonstrates tightening of the double loop along the long axis of the wound using suture.Knowledge Weavers Dermatology
9 SkinHealing skin (rat). See lymphocyte infiltration. UCLA Histology Collection.SkinUCLA Histology
10 SomatotropinomaSomatotropinomaKnowledge Weavers Pathology
11 Eye - RetinaThe retina consists of the retinal pigment epithelium and neurosensory retina. The neurosensory retina includes multiple layers of neurons and some glia. The outer nuclear layer contains the cell bodies of rod and cone photoreceptors. The inner nuclear layer contains the cell bodies of multiple neur...UCLA Histology
12 OvaryThis tissue looks like a dying corpus luteum, but that is a rare event. This is an example of a structure that we cannot identify unless we see a zona pellucida and/or a glassy membrane. If you had a section along the plane labelled A you would not be able to differentiate between a section through ...OvaryUCLA Histology
13 Corpus luteum cysts exhibit a convoluted lining with luteinized granulosa and theca cells.Corpus luteum of the ovary, medium power. The granulosa cells have undergone proliferation and alteration to lutein cells that produce progesterone. The lutein cells are large and polyhedral and the cytoplasm is foamy and eosinophilic.Knowledge Weavers Human Reproduction
14 EarAt this higher magnification, one can differentiate the hair & supporting cells, the gelatinous cupula, and the dark cells which mark the transition of the membranous labyrinth into the crista ampullaris. Bone is also evident. Movement of the endolymph against the cupula causes bending of hair cell ...Crista Ampullaris; EarUCLA Histology
15 Peripheral Nervous SystemThis slide of myelinated nerves is stained with osmium to demonstrate the myelin sheaths. The region where two myelin sheaths covering the same axon contact one another is the Node of Ranvier. The region of myelin sheath between these nodes is known as the internode. UCLA Histology Collection.myelin sheaths; osmium; Peripheral Nervous SystemUCLA Histology
16 Epithelium - CorneaThe cornea of the eye is lined by simple squamous epithelium on its inner surface and stratified squamous epithelium on its outer surface. The stroma of the cornea consists of regularly arranged collagen fibers. UCLA Histology Collection.simple squamous epithelium; stratified squamous epitheliumUCLA Histology
17 Cells / Organelles - PituitaryCells of the pituitary gland containing cytoplasmic secretory granules. The red-orange granules and the blue-purple granules contain different hormones. UCLA Histology Collection.pars distalis; secretory granulesUCLA Histology
18 Recent hemorrhagic infarctionRecent hemorrhagic infarctionKnowledge Weavers Pathology
19 Adenocarcinoma, colonAdenocarcinoma, colonKnowledge Weavers Pathology
20 Shave techniqueThis demonstrates a shave technique on a pig's foot. Because there are no protruding lesions, I start by angling the blade at about 45 degrees from the skin surface, and while advancing the blade forward, I have a slight side to side sawing motion, and when I am about halfway through the target, I t...Shave BiopsyKnowledge Weavers Dermatology
21 UrticariaThis patient has developed rather severe urticaria, the cause of which was unknown. In urticaria, the skin swells and initially looks red and later can blanch as the amount of fluid increases within the skin. Internal organs can be involved in the process, and we are particularly concerned about the...Knowledge Weavers Dermatology
22 SilvadeneI placed Silvadene on the wound. Silvadene is an excellent antibacterial cream to apply to a wound after debridement. One must insure that an 1/8 inch to 1/4 inch coat is applied to help insure that the dressing doesn't absorb all the cream and allow the wound to subsequently dry out.Knowledge Weavers Dermatology
23 OvaryA typical preantral follicle possessing a zona pellucida , multilayered granulosa or follicular cells and a stromal derived theca again embedded in stroma. Be sure you realize that the components within the zona pellucida are the nucleus of the ovum and its cytoplasm. UCLA Histology Collection.Ovary; preantral follicleUCLA Histology
24 lymphoid tissueThis image shows stratified squamous epithelium overlying connective tissue. The parenchyma contains many lymphoid nodules. Crypts are present where epithelium invaginates into parenchyma. UCLA Histology Collection.lymphoid nodule; lymphoid tissue; palatine tissue; palatine tonsilUCLA Histology
25 Cells / Organelles - LiverAt a higher magnification, liver cell nuclei can be seen to have nucleoli. Note the heterochromatinheterochromatin lining the internal portion of the nuclear envelope. UCLA Histology Collection.Cells and Organelles; NucleusUCLA Histology
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