Biology

Nasal Cavity Definition Nasal cavity the cavity on either side of the nasal septum, extending from the nares to the pharynx, and lying between the…

Pheromone Definition Pheromone is a chemical secreted by an animal that influences the behavior or development of other members of the same species. Queen bees,…

Chemoreceptor Definition Chemoreceptor is a sensory nerve cell or sense organ, as of smell or taste that responds to chemical stimuli. It is usually refers…

Mammillary Body Defriniion Mammillary body is one of a pair of small round bodies, located on the undersurface of the human brain, at the ends…

Cingulate Cortex Definition Cingulate cortex is a part of the limbic cortex, a term referring to the cortical areas that receive axonal fibers from neurons…

Midbrain Definition Midbrain is the middle part of the vertebrate brain. In most animals except mammals, the midbrain processes sensory information. In mammals, it serves…

Olfactory Bulb Definition Olfactory bulb is the anterior and slightly enlarged end of the olfactory tract, from which the cranial nerves concerned with the sense…

Fornix Definition Fornix is the compact bundle of white fiber by which the hippocampus of each cerebral hemisphere projects to the opposite hippocampus and to…

Entorhinal Cortex Definition Entorhinal Cortex (EC) is a part of the medial temporal lobe or hippocampal memory system and constitutes the major gateway between the…

Epithalamus Definition Epithalamus is a dorsal segment of the diencephalon containing the habenula and the pineal body. It is a segment of the diencephalon which…

Diencephalon Definition Diencephalon is the posterior part of the forebrain that connects the midbrain with the cerebral hemispheres, encloses the third ventricle, and contains the…

About Thalamus Defnition Thalamus is the part of the vertebrate brain that lies at the rear of the forebrain. It relays sensory information to the…