Accessory Organs
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Accessory Organs

An anatomy image of accessory organs emphasizes structures that support major systems without forming the main pathway. Common examples include the liver, pancreas, gallbladder, and salivary glands. The layout shows…
Hepatic Portal Vein System
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Hepatic Portal Vein System

The hepatic portal vein system is a unique venous network that collects nutrient-rich, deoxygenated blood from the gastrointestinal tract, pancreas, and spleen and delivers it directly to the liver for…
Histology of the Large IntestineN
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Histology of the Large IntestineN

The large intestine's histology is geared toward water absorption, electrolyte balance, and waste formation, with a mucosa lacking villi but featuring deep crypts of Lieberkühn lined by columnar absorptive cells…
Structures of the Respiratory Zone
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Structures of the Respiratory Zone

Structures of respiratory zone begin distal terminal bronchioles with occasional alveoli respiratory bronchioles more leading alveolar ducts fully walled sacs clusters sharing openings millions thin-walled pouches type I cells diffusion…
Blood Flow Contracted Ventricles
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Blood Flow Contracted Ventricles

A heart cycle image showing contracted ventricles focuses on blood being forced into the aorta and pulmonary artery. Valve positions and flow direction clarify how each heartbeat moves blood efficiently…
Gross Anatomy of the Lungs
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Gross Anatomy of the Lungs

The lungs are paired spongy organs in the thoracic cavity, each divided into lobes—three on the right, two on the left—to accommodate the heart's position. The right lung is shorter…
Mucosa Associated Lymphoid Tissue MALT Nodule
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Mucosa Associated Lymphoid Tissue MALT Nodule

Mucosa-associated lymphoid tissue, including nodules like Peyer’s patches in ileum, tonsils, and appendix, forms diffuse surveillance networks beneath epithelial surfaces rich in antigens, with M cells sampling lumen contents for…
Internal Anatomy of the HeartN
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Internal Anatomy of the Heart

The heart's internal anatomy features four chambers with septa dividing left and right, atria receiving blood via smooth posterior walls and pectinate anterior plus auricles, ventricles with trabeculae carneae and…