where are the olfactory bulbs located?
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Each olfactory nerve projects ipsilaterally. The target of the olfactory nerve on each side is the olfactory bulb, which lies on the ventral anterior aspect of the ipsilateral forebrain.
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The initial event in odor perception is the detection of odorants by olfactory (odorant) receptors (ORs), which are located on olfactory sensory neurons in the olfactory epithelium of the nose (1–4). ORs are seven-transmembrane domain G protein-coupled receptors, which are encoded by a large multigene family (1, 5).
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The hypothalamus–pituitary complex is located in the diencephalon of the brain. ... The posterior lobe houses the axon terminals of hypothalamic neurons. It stores and releases into the bloodstream two hypothalamic hormones: oxytocin and antidiuretic hormone (ADH).
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Location. The bulbourethral glands are found inferior to the prostate and they sit posterolaterally to the membranous urethra (the smallest section of the urethra, which lies inferior to the prostatic urethra). In other terms, the glands sit at the base of the penis, within the deep part of the perineal pouch.
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Olfactory receptor cells have several unique characteristics: ... Unlike other sensory receptor cells such as the rods and cones of the visual system, which receive sensory input and then transmit this information to an adjacent nerve cell, the olfactory receptors are located on nerve cells directly connected to the brain.
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noun, plural ol·fac·to·ries. an olfactory organ. olfactory nerve.
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Amygdaloid nucleus: A small oval structure in the temporal lobe of the brain that is closely connected to the hypothalamus, the hippocampus, and the cingulate gyrus. The amygdaloid nucleus is part of the olefactory and limbic systems and plays a role in the sense of smell, motivation, and emotional behavior.
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The olfactory tract is a bilateral bundle of afferent nerve fibers from the mitral and tufted cells of the olfactory bulb that connects to several target regions in the brain, including the piriform cortex, amygdala, and entorhinal cortex.
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Synaptic knobs are located on a neuron's axon. The axon can be very long and have many synaptic knobs.
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Pituitary gland and hypothalamus The pituitary gland is a small, bean-shaped gland situated at the base of your brain, somewhat behind your nose and between your ears. Despite its small size, the gland influences nearly every part of your body.
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Due to the relatively unprotected position of olfactory receptor neurons, they are susceptible to damage from pollutants in the air. Various airborne chemicals can damage the olfactory receptor cells and surrounding.
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Olfactory receptor cells in the nose send their electrical messages via the olfactory nerve to the olfactory bulb, the brain's first processing station for odor information. Millions of receptor cells, each containing one of hundreds of possible olfactory receptors, are scattered randomly throughout the nose.
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The Sense of Smell. Smell depends on sensory receptors that respond to airborne chemicals. In humans, these chemoreceptors are located in the olfactory epithelium — a patch of tissue about the size of a postage stamp located high in the nasal cavity.
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Odors in the Brain Once an odor molecule binds to a receptor, it initiates an electrical signal that travels from the sensory neurons to the olfactory bulb, a structure at the base of the forebrain that relays the signal to other brain areas for additional processing.
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Olfactory sensory neurons, located in the nasal epithelium, detect and transmit odorant information to the central nervous system.
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How are the olfactory receptors activated? The olfactory tracts transduce signals to the hypothalamus. Odorants dissolve in the mucus and bind to receptors. Mitral cells relay signals to the olfactory bulbs.
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['Diagram.', "I. Olfactory nerve. The olfactory nerve transmits information to the brain regarding a person's sense of smell. ... ", 'II. Optic nerve. ... ', 'III. Oculomotor nerve. ... ', 'IV. Trochlear nerve. ... ', 'V. Trigeminal nerve. ... ', 'VI. Abducens nerve. ... ', 'VII. Facial nerve.']