An element is a pure substance that is made from a single type of atom. Elements are the building blocks for all the rest of the matter in the world.
The pneumotaxic center, also known as the pontine respiratory group (PRG), is a network of neurons in the rostral dorsal lateral pons.It consists of the Koelliker-KÃ¶lliker fuse nucleus and the medial parabrachial. Nucleus it is considered an antagonist to the apneustic, center which produces abnormal breathing during. inhalationespiratory effects [edit]. The PRG antagonizes the apneustic center, cyclically inhibiting inhalation. The PRG limits the burst of action potentials in the phrenic nerve, effectively decreasing the tidal volume and regulating the respiratory rate.
Central Nervous System (CNS) The CNS includes the brain and the spinal cord. The most important parts of the CNS are protected by bones. The skull protects the brain and the spine protects the spinal cord. The nervous system is made up of the CNS and the peripheral nervous system (PNS). The PNS includes the neurons, or nerves, that form a network that carries information to and from the neck and arms, trunk, legs, skeletal muscles, and internal organs.