For example, the vast majority of people with memory loss do not have problems with a loss of self-identify (meaning that they know exactly who they are). In addition, sudden head trauma (such as that which may occur in a car accident) may cause some confusion or disorientation, but it rarely leads to amnesia.
Stroma is the thick fluid within the chloroplast. I think you mean 'Stroma'. Stroma can refer to two things in Biology. Stroma is the fluid inside chloroplasts, the site of photosynthesis in all plant cells. It is also, however, the framework (like a skeleton) inside any biological tissue, cell or organ.
1 The nerves, intrinsic blood vessels, and connective tissue of the heart comprise the stroma. 2  The parenchyma of the brain is nervous tissue (nerve cells and glia). 3  The blood vessels within the brain and the connective tissue associated with these blood vessels are stroma.