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.
1 A myelin sheath. 2  The axons have a protective covering called myelin. 3  Without myelin, the brain and spinal cord can't communicate with each other or with the nerves in the rest of the body. neuron is a nerve cell. Neurons send information to and from your brain to the rest of your body. A neuron is made up of: 1  A cell body. 2  This is where the nucleus is. 3  Dendrites. 4  The dendrites receive signals from other neurons. 5  A long, thin axon. 6  The axon is covered by a myelin sheath.