While collective impact has a track record of success against a range of social and environmental issues, not all... This framework offers a guide to help your group of stakeholders assess whether or not collective impact is the right approach to address a specific social problem in your community....
Histology (Cells) of the Nervous System â¢ 2 major categories of cells are found in the nervous system:â¢ 1. Nerve cells (neurons) âcarry impulses and are electrically excitable.â¢ 2. Glial cells (neuroglia)- do not carry impulses, not electrically excitable.â¢ We will discuss glial cells first.â¢ Glial Cells (Neuroglia): These cells do not carry electrical impulses as they are not electrically excitable. There are several types of glial cells with a number of different functions.
Nerve cells in the nervous system send signals called action potentials, during which the soma, or cell body of the neuron, sends an electrical signal down the axon. When not signaling, a neuron is hyperpolarized, meaning it has a negative charge when compared to the outside.