1 Connect your iOS device to your computer. 2  Try to import your photos again using your photo-management software. 3  You can also try these steps on your PC: 4  Mac: Open Image Capture in the Applications folder. 5  Windows 8: Move the cursor to the upper-right corner, click the magnifying glass, enter Computer, and press Return.ry to import the photos again. First, try the steps to import the photos to your computer again. Then try these steps: 1  Create a new photo to import. 2  You can save a screenshot on your iOS device by pressing the Home button and the Sleep/Wake button at the same time. 3  Connect your iOS device to your computer.
Cells of the Nervous System. The nervous system is made up of two types of cells: neurons and glia. Neurons are the fundamental cellular unit of the central nervous system (CNS) and peripheral nervous system (PNS). Essential features of neurons:1  The purpose of neurons is to receive, process, and transfer information.2  This information is made up of chemical or electrical signals.ells of the Nervous System. The nervous system is made up of two types of cells: neurons and glia. Neurons are the fundamental cellular unit of the central nervous system (CNS) and peripheral nervous system (PNS). Essential features of neurons:
Others are 3 feet long. Some axons are covered in myelin. Myelin protects the axons and helps carry axon messages as quickly as possible. Myelin. Myelin is made of membrane layers that cover an axon. This is similar to the idea of an electrical wire with coating to protect the metal underneath. Myelin allows a nerve signal to travel faster. In unmyelinated neurons, a signal can travel along the nerves at about 1 meter per second. In a myelinated neuron, the signal can travel 100 meters per second. Certain diseases can damage myelin. Demyelination slows down messages sent along axons and causes the axon to deteriorate.