Skin appendages are derivatives of the epidermis. Neuroglia (glial cells) (supporting cells) Since tissues are relatively colorless, the magnifying properties of the optic microscope are not sufficient for proper visualization of a specimen; therefore staining techniques described above are coupled with optic microscopy. Many axons are wrapped by an insulating substance called myelin, which is actually made from glial cells. Scattered in the cytoplasm are the characteristic clusters of ribosomes and rough ER termed Nissl bodies or Nissl substanceslide 066aView Image. Then, get ready to test your knowledge! Download Presentation Histology of Nervous Tissue An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Different regions of the nervous system have distinct histological characteristics that make them easily recognizable, under the microscope. Lymph nodes are distributed along lymphatic vessels, filtering lymph as it passes through. Later in this sequence, you will learn how the hippocampus and dentate gyrus function in what is known as the "limbic system" to integrate inputs from many parts of the nervous system into complicated behaviors such as learning, memory, and social interaction. Thompson, Ph.D. Histology of Nervous Tissue Despite the complexity of organization, there are only two functional cell . Nervous tissue consists of two cells: nerve cells or neurons and glial cells, which helps transmit nerve impulses and also provides nutrients to neurons. Young, B., Woodford, P., ODowd, G., & Wheater, P. R. (2014). Epithelial tissue can cover external surfaces (skin), line the inside of hollow organs (intestines) or form glands. The latter constitutes the diffuse neuroendocrine system (DNES). Available at theiTunes Storeand for Android users at theGoogle Play Store. Anatomy & Physiology I Chapter 4. Very little can pass through by diffusion. Ongoing research into these cells, although not entirely conclusive, suggests that they may originate as white blood cells, called macrophages, that become part of the CNS during early development. Depending on the number of layers, epithelial tissue is classified into simple (single layered) or stratified (multi-layered). DiFiores atlas of histology with functional correlations. Nervous Tissue DR. DEVI 1 16-4-19 2. Learn more about how Pressbooks supports open publishing practices. Peripheral Nervous System | histology - University Of Michigan Did you know that there are special cardiomyocytes in your heart that spontaneously generate impulses to initiate heartbeats? It is composed of densely packed epithelial cells with only a little extracellular matrix (ECM). Histology - Histology.
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