The second group of mycorrhizae is endomycorrhizae which are also known as vesicular-arbuscular mycorrhizae or VAM. Roughly, 80% of all the plants in the world form associations with endomycorrhizae, as does nearly every greenhouse plant.
Pyramidal neurons (pyramidal cells) are a type of neuron found in areas of the brain including the cerebral cortex, the hippocampus, and the amygdala.Pyramidal neurons are the primary excitation units of the mammalian prefrontal cortex and the corticospinal tract.yramidal neurons in the prefrontal cortex are implicated in cognitive ability. In mammals, the complexity of pyramidal cells increases from posterior to anterior brain regions. The degree of complexity of pyramidal neurons is likely linked to the cognitive capabilities of different anthropoid species.
Cerebral Cortex The cerebral cortex is the outer surface of the cerebral hemispheres. It is the highest level of the brain and has about 20 billion neurons in the human brain which carry out the highest levels of mental functioning. The cerebral cortex is a layer of grey matter up to about 1/2 cm thick.Figure 3-2d shows a cross section of the cerebral hemispheres with the cortex shown as the pink layer on their outer surface.Figure 4-2d shows a highly magnified slice through the cortex. It is stained with a dye that colors (only) the cell bodies of neurons and glia blue.igure 3-2d shows a cross section of the cerebral hemispheres with the cortex shown as the pink layer on their outer surface. Figure 4-2d shows a highly magnified slice through the cortex. It is stained with a dye that colors (only) the cell bodies of neurons and glia blue.