This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
Mitral cells and periglomerular cells are seen in 
Select and explain. 
A. Medulla, B. Olfactory bulb, C. Primary visual coex, D. Geniculate body
B: Olfactory bulb
Answer: B: Olfactory bulb 
Explanation: In the olfactory bulbs, the axons of the olfactory sensory neurons contact the primary dendrites of the mitral cells and tufted cells to form anatomically discrete synaptic units called olfactory glomeruli. The olfactory bulbs also contain periglomerular cells, which are inhibitory neurons connecting one glomerulus to another, and granule cells, which have no axons and make reciprocal synapses with the lateral dendrites of the mitral and tufted cells.