Biology

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…

Hippocampus Definition Hippocampus is a convoluted, seahorse-shaped structure in the cerebral cortex of the temporal lobe of the brain, composed of two gyri with white…

Amygdala Definition Amygdala is an almond-shaped mass of gray matter in the front part of the temporal lobe of the cerebrum that is part of…

Cerebrum Definition Cerebrum is the largest part of the vertebrate brain, filling most of the skull and consisting of two cerebral hemispheres divided by a…

Limbic System Definition Limbic System is a group of interconnected structures of the brain including the hypothalamus, amydala, and hippocampus that are located beneath the…

Anterior Pituitary Definition Anterior pituitary is a gland at the base of the brain in vertebrate animals that is divided into two regions, anterior and…