Chapter 6 The cardiovascular system/Fig 6.38.jpg

You can download this figure by right-clicking it and choosing 'Save Picture As...'

An electron micrograph showing a capillary in the cerebral cortex. It contains a red blood cell. There are two endothelial cells whose cytoplasm is non-fenestrated. The endothelial cells overlap and there is a tight junction between the cells seen as a black line. This is characteristic of a less permeable endothelium.