Learn: LECOM OMS-1 Histology Labs 4-7 | Quizlet

Hyaline Cartilage

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Hyaline Cartilage

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Elastic Cartilage

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Elastic Cartilage: Resorcin-Fuchsin

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Fibrocartilage

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Fibrocartilage

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ID the Zones

1. Zone of Reserve Cartilage

2. Zone of Proliferation

3. Zone of Hypertrophy

4. Zone of Ossification

Osteoblast

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Osteoclast

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- Osteon

- Haversian Canal

- Osteocytes

- Concentric Lamellae

- Interstitial Lamellae

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- Osteon

- Haversian Canal

- Osteocytes

Purkinje Cell in Cerebellum

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Purkinje Cell (Silver Salt)

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Pyramidal Cell in Cerebrum

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Peripheral Nerve

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Peripheral Nerve with Node of Ranvier

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Astrocyte (GTAP)

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Oligodendrocyte (Silver Salt)

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Microglial Cell (Silver Stain)

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Oligodendrocyte

What does the yellow circle show?

Microglial Cell

What does the blue circle show?

Astrocyte

What does the green circle show?

Ependymal Cells (H+E Stain)

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Peripheral Nerve/Ganglion with Pseudounipolar Cells surrounded by Satellite Cells

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Eosinophil

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Lymphocyte

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Reticulocyte

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Neutrophil

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Basophil

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Monocyte

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Spleen

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Spleen (Higher magnification)

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Thymus

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Hassal's Corpuscle in the Thymus (Type VI)

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Lymph Node

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Lymph Node

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Palatine Tonsil

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Palatine Tonsil

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Elastic Cartilage H+E

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Transitional Epithelium (Urothelium)

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Microglial nuclei

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Stratified Columnar Epithelium

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Pseudostratified Columnar Epithelium

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Reticular fibers - Silver impregnation

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Peripheral Nerve Cross-Section

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Simple Cuboidal Epithelium

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Sensory ganglion - Pseudounipolar neurons and Satellite cells

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Vessel, endothelium (a form of simple squamous epithelium)

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Skeletal muscle, A band, I band

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Pyramidal cell in the cerebral cortex

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Skeletal muscle, sarcomere, A band, I band, Z line

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Astrocyte

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Spleen, Malpighian corpuscle that is a lymphatic follicle perforated by a central artery or arteriole

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White Adipose Tissue

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Old myocardial infarction - scar tissue replaced the cardiac muscle on the right. Below is the normal cardiac muscle

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Conducting system in the endocardium - Purkinje fibers. Enlarged fibers, vacuolated cytoplasm, high glycogen content, few myofibrils, cross striation. Left and right we can see the myocardium.

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Smooth muscle cross section (left) and longitudinal section (right)

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Wharton's Jelly

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Loose Connective Tissue

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Intramembranous Ossification. Osteoblasts line the bone trabeculae

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Plasma cells (arrow) and at the bottom there is a lymphocyte

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Smooth muscle

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Lymph node, cortex, and paracortex

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Elastic fibers with Resorcin-Fuchsin

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Spleen, Malpighian corpuscles that represent the white pulp surrounded by red pulp

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Sickle cells

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Cardiac muscle cross section. Note the vessels between the cells that appear like white gaps

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Simple columnar epithelium with goblet cells

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Acute myocardial infarct - most of the nuclei disappeared from the cells

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Brown adipose tissue

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Dense irregular connective tissue - type I. collagen fibers and fibroblasts and submucosa

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Stratified squamous nonkeratinized epithelium

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Enchondral ossification, epiphyseal plate. Zone of resting cartilage, zone of proliferation, zone of hypertrophy and zone of ossification.

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Palatine tonsil, high magnification, covered by stratified squamous nonkeratinized epithelium, lymphatic follicles

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Fibrocartilage, chondrocytes and type I. collagen fibers

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Monocyte

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Dense irregular connective tissue - type I. collagen fibers and fibroblasts and submucosa

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Lymph node

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Dense regular connective tissue - type I. collagen fibers and fibroblasts. Tendon.

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Hyaline cartilage H&E

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Skeletal muscle, cross section

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Elastic cartilage, resorcin-fuchsin. Epiglottis.

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Sebaceous gland - holocrine secretion.

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Fibrocartilage, chondrocytes and type I collagen fibers

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Bone, lamellary systems. Haversian and interstitial lamellae, osteocytes between them

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Cardiac muscle, intercalated discs

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Osteoclasts, resorption bay

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Apocrine secretion in the mammary gland

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Large lymphocyte, basophils and neutrophil granulocyte

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Osteocytes

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Stratified squamous keratinized epithelium. Skin.

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Nerve longitudinal section. Note the myelin sheath and the node of Ranvier

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Salivary gland, serous and mucous acini and serous demilunes (artifact). Merocrine secretion.

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Stratified cuboidal epithelium (sweat gland duct)

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Hyperparathyroidism - numerous osteoclasts. Hypercalcaemia.

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Polymyositis - a muscle fiber is surrounded by lymphocytes and macrophages that break down the fiber - autoimmune disease against the muscle fibers

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Thymus, lobules, cortex, medulla. Capsule on the surface, vessels

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Osteomyelitis - lymphocytic aggregation next to a bone trabecule

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Mastocyte next to a vessel

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Multipolar cells spinal cord ventral horn

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