telencephalon

(noun)

The anterior part of the forebrain; the endbrain.

Related Terms

Examples of telencephalon in the following topics:

  • Development of the Human Brain

    • The forebrain has two major divisions: the diencephalon and the telencephalon.
    • The diencephalon is lower, containing the thalamus and hypothalamus (which together form the limbic system); the telencephalon is on top of the diencephalon and contains the cerebrum, the home of the highest-level cognitive processing in the brain.
    • The telencephalon and diencephalon give rise to the forebrain, while the metencephalon and myelencephalon give rise to the hindbrain.

  • Development of the Central Nervous System

    • At six weeks in human embryo development, the prosencephalon divides further into the telencephalon and diencephalon and the rhombencephalon divides into the metencephalon and myelencephalon.
    • The telencephalon differentiates into, among other things, the striatum, the hippocampus, and the neocortex, and its cavity becomes the first and second ventricles.

  • Functions of the Diencephalon

    • In development, the forebrain develops from the prosencephalon, the most anterior vesicle of the neural tube that later forms both the diencephalon and the telencephalon.
    • The subthalamus connects to the globus pallidus, a basal nucleus of the telencephalon.

  • Cerebral Lobes

    • The telencephalon (cerebrum), the largest portion of the human brain, is divided into lobes like the cerebellum.
    • If not specified, the expression "lobes of the brain" refers to the telencephalon.
    • There are four uncontested lobes of the telencephalon:

  • Midbrain

    • It does not split into other brain areas while the prosencephalon, for example, divides into the telencephalon and the diencephalon.

  • Embryonic Development

    • The prosencephalon further goes on to develop into the telencephalon (the forebrain or cerebrum) and the diencephalon (the optic vesicles and hypothalamus).

  • Embryonic Development of the Brain

    • In the fifth week, the alar plate of the prosencephalon expands to form the cerebral hemispheres (the telencephalon).

  • Establishing Body Axes during Development

    • The prosencephalon further goes on to develop into the telencephalon (the forebrain or cerebrum) and the diencephalon (the optic vesicles and hypothalamus).