The tissue in the image is most likely which tissue type?

• A. Brain
• B. Muscle
• C. Kidney
• D. Liver

Answer: (A)

Brain tissue is identified by the presence of neurons with large cell bodies and extensive networks of neurites (the neuropil), along with a prominent nucleolus and Nissl substance in the cytoplasm. These neuronal features stand out against glial cells and distinguish brain from other organs. In contrast, skeletal or cardiac muscle would show organized, striated fibers; kidney would display tubules and glomeruli, and liver would show cords of polygonal hepatocytes with sinusoids. The image’s neuronal morphology—large cell bodies with abundant cytoplasm and visible processes—points to brain tissue.