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Cross-section of a nerve showing nerve fibers organized into bundles or fascicles that are enclosed by a band of connective tissue called epineurium. SEM X900 at 6 1/2" X 6 1/2" **On Page Credit Required**

#wellbeing Astrocytes and myelination. It has been discovered that astrocytes communicate with neurons and modify the signals they send or receive. That means astrocytes are much more involved than we thought in the processing of information, and in the signaling that occurs at the synapse.

Brain nerve cells. Scanning electron micrograph of cortical neurons...

Human Nervous system divided into two main parts: the peripheral nervous system and the central nervous system.


Cytoskeleton of a neuron (SEM) by Bernd Knöll (University of Tübingen), Jürgen Berger, and Heinz Schwarz (Max-Planck-Institute for Developmental Biology)

Neuromuscular junction. The nerve (in white) transmits its signal to the skeletal muscle (grey tubes) to generate contraction.

Incredible close-up shot of living human brain wins microscope photography competition

These cells line the Choroid Plexus, a layer of tissue that lines the inside of the ventricles of the nervous system. The swollen tips of these cells secrete the cerebrospinal fluid which bathes the brain in glucose and proteins, and prevents it from collapsing under its own weight.