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26 Ingrown nailThe nail plate is cut from the underlying nail bed with scissors.Knowledge Weavers Dermatology
27 Excision procedureDemonstrates the same V. Summary)Knowledge Weavers Dermatology
28 Eye - Lens FibersLens fibers elongating as they move posterior. UCLA Histology Collection.UCLA Histology
29 Peripheral Nervous System / Central Nervous SystemThe relationship between the spinal cord, the spinal roots, and the meninges is illustrated here. The surface of the spinal cord is covered by pia mater. Between the pia mater and web-like arachnoid mater is the subarachnoid space which contains CSF. The thick, collagenous dura mater is continuous w...arachnoid mater; Central Nervous System; dura mater; meninges; Peripheral Nervous System; pia mater; spinal cord; spinal rootsUCLA Histology
30 Peripheral Nervous SystemThis cross sectioned peripheral nerve demonstrates the relatively thick myelin covering of axons, as well as the endoneurium which is located between the myelin sheaths. Also note the blue-stained collagen of the epineurium and a small blood vessel. UCLA Histology Collection.axons; endoneurium; myelin; Peripheral Nervous SystemUCLA Histology
31 PlacentaThis image presents the basic organization of the placenta. Embedded within the maternal blood space are numerous fetal villi, some of them clearly tertiary villi , all lined by the syncytiotrophoblast . The only things missing in this image are maternal decidual cells and fetal/maternal fibrinoid. ...PlacentaUCLA Histology
32 Epithelium - Lymphoid TissueCrypts of the palatine tonsils are lined by stratified squamous epithelium. The lymphoid tissue can be seen organized in nodules. A connective tissue capsule partially surrounds the tonsil. Note the skeletal muscle which is associated with the palatine tonsil. UCLA Histology Collection.palatine tonsilUCLA Histology
33 KidneyThe renal papilla is the site where terminal collecting ducts empty urine into the U-shaped minor calyx. The lumen of the minor calyx is lined by transitional epithelium. Strands of circular smooth muscle are found in the wall of the minor calyx. UCLA Histology Collection.Kidney; minor calyx; renal papilla; terminal collecting ductsUCLA Histology
34 Eye - Lens EpitheliumThis enlargement of slide 236-2.5-2 reveals the lens epithelium in various phases: the anterior epithelium, area of proliferation, and area of elongation. The lens bow region consists of lens fiber nuclei in various stages of degeneration. UCLA Histology Collection.UCLA Histology
35 Thymus - Hassall's CorpuscleThis image shows an early and a late Hassall's corpuscle. Also visible are numerous epithelial reticular cells and even more numerous lymphocytes. UCLA Histology Collection.epithelial reticular; Hassall's corpuscleUCLA Histology
36 Adenocarcinoma, prostateAdenocarcinoma, prostateKnowledge Weavers Pathology
37 Anterior pituitaryAnterior pituitaryKnowledge Weavers Pathology
38 Circulatory System - Brachial Artery and VeinThis image shows the brachial artery (a muscular artery) at lower left, and the brachial vein at right. The staining of elastic fibers demonstrates the dark internal elastic membrane (IEM) and external elastic membrane (EEM), sandwiching the tunica media. The arterial intima appears to have sloughed...brachial vein; tunica adventitiaUCLA Histology
39 Respiratory SystemBronchus-associated lymphoid tissue BALT consists of submucosal lymphoid tissue in intermediate and small airways. They are part of the diffuse mucosa-associated lymphoid tissue (MALT) also found in many other tissues. These structures are normal, but similar collections in lung alveolar tissue are ...Lung; lymphoid tissue; Respiratory SystemUCLA Histology
40 PlacentaThis image presents all that you have to know about placental histology for this course. Fetal villi, some clearly tertiary villi , are completely surrounded by the maternal blood space. Lining everything in this image is the syncytiotrophoblast . The only other maternal component in this image is a...PlacentaUCLA Histology
41 Glands of GI TractHigher magnification image of liver stained with PAS showing different levels of glycogen storage in hepatocytes. Some hepatocytes have numerous glycogen granules, whereas there are other hepatocytes without glycogen granules, indicating depletion of stored glycogen. UCLA Histology Collection.glycogen; Liver; PAS stain; gastrointestinal tractUCLA Histology
42 OvaryThis image shows a small region of a corpus luteum within the stroma. The somewhat folded layer of granulosa lutein cells is quite evident. Even at this magnification, the smaller theca lutein cells are identifiable. A vascular space can also be recognized in this image. UCLA Histology Collection.corpus luteum; OvaryUCLA Histology
43 Thymus - Young ThymusYoung thymus, showing cortex and portions of the medulla. Note a Hassals corpuscle in the medulla. ( This is a diagnostic feature of the thymus.) UCLA Histology Collection.cortex; lymphoid organUCLA Histology
44 Ingrown nailThis shows the nail plate just barely attached.Surgical MethodsKnowledge Weavers Dermatology
45 Recent hemorrhagic infarction 2Recent hemorrhagic infarction 2Knowledge Weavers Pathology
46 Infiltrating ductal carcinomaInfiltrating ductal carcinomaKnowledge Weavers Pathology
47 Thymus - Epithelial Reticular CellsThis image from the medulla shows many epithelial reticular cells, which have a pale cytoplasm, large nucleus, and prominent nucleolus. These cells form a meshwork which contains developing lymphocytes. One macrophage or PAS cell is visible. PAS stains its phagocytic inclusions bright pink. Note the...epithelial reticular; Hassall's corpuscle; PASUCLA Histology
48 SkinThis high power view illustrates the relationship of epidermal pegs, which invaginate into the dermis, with the dermal papillae which extend into the epidermis. This sample has a highly pigmented basal layer, composed of keratinocytes with melanosomes. Melanocytes produce the pigment melanin and are...epidermis; SkinUCLA Histology
49 Mucinous cystadenomaThese tumors comprise 20% of all neoplasms, and 50% of ovarian neoplasms found in women less than 20 years of age. They are frequently multiloculated. The favored hypothesis for their origin is metaplastic surface epithelium as they have a predominance of endocervical gland type epithelium.Knowledge Weavers Human Reproduction
50 Ovarian tumorA large vertical incision allows delivery and excision of an ovarian neoplasm. Pelvic washings for cytology and a frozen section rule out a malignancy. The cyst is excised carefully to avoid spilling contents into the abdomen.Knowledge Weavers Human Reproduction
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