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Nerve Tissue

Neurobiology is a vast and rapidly expanding field with significant clinical and technological implications. It asks big questions like, “how does consciousness develop” and “what composes a personality?” and reduces them to quantitative study. The neuron, which mediates the transfer of information throughout the body via electrochemical signals, is the fundamental unit of neurobiology. In this course, we discuss the anatomy of the nervous system, its various components, and their functions.

Content

Histology of the Nervous System

Nerve tissue consists of 2 principal types of cells: neurons and supporting cells. The neuron is the structural and functional/electrically excitable unit of the nervous system that receives, processes, and transmits electrical signals to and from other parts of the nervous system via its cell processes. There are multiple types of neurons that are classified based on their anatomic structure and function as sensory neurons, motor neurons, and interneurons. The functional components of a neuron include dendrites (to receive signals), a cell body (to drive cellular activities), an axon (to conduct impulses to target cells), and synaptic junctions (specialized junctions between neurons that facilitate the transmission of impulses between neurons; they are also found between axons and effector/target cells, such as muscle and gland cells). Supporting cells are called neuroglial cells and are located close to the neurons; however, these cells do not conduct electrical signals. The CNS consists of 4 types of glial cells: oligodendrocytes, astrocytes, microglia, and ependymal cells, each having a different function. In the PNS, the supporting cells are called peripheral neuroglia and include Schwann cells, satellite cells, and various other cells having specific structures and functions. Schwann cells surround the processes of nerve cells and isolate them from adjacent cells and the extracellular matrix by producing a lipid-rich myelin sheath, ensuring the rapid conduction of nerve impulses. Satellite cells are similar to Schwann cells, but they surround the nerve cell bodies. In the CNS, oligodendrocytes produce and maintain the myelin sheath. A nerve is composed of a collection of bundles (or fascicles) of nerve fibers. Within the CNS, the brain and spinal cord tissue can be classified as gray or white matter, depending on the tissue composition. White matter is most notably composed of myelinated nerve fibers, whereas gray matter is made up of neuronal cell bodies.

Your Educators of course Nerve Tissue

Geoffrey Meyer, PhD

Prof. Geoffrey Meyer is a Professor and Senior Honorary Research Fellow in the School of Human Sciences at the University of Western Australia.
He obtained his PhD from the University of Western Australia in 1981. Currently, he is the Coordinator for Histology in the Federative International Program for Anatomical Terminologies (FIPAT) of the International Federation of Associations of Anatomists (IFAA).
Due to his achievements, he earned the Australian University Teaching Award and has received teaching fellowships from the University of Western Australia and the Australian Learning and Teaching Council.
Within Lecturio, Dr. Meyer teaches courses on Histology.

User reviews

(16)
4,8 of 5 stars

5 Stars		14
4 Stars		1
3 Stars		0
2 Stars		1
1 Star		0

Detailed

By Tomas D. on 01. May 2023 for Structure of Peripheral Nerves and Brain

Very detailed inormation, helps to get good understanding, thank You!

Great Professor and very good explanation!

By Mirela P. on 14. May 2022 for Nerve Tissue

Very good explanation, to understand from beginning!!! I was really afraid about Histology, but Dr. Meyer's explanation gave me confidence and helped me to build a solid foundation, in order to learn more info later on. Thank you, Dr. Meyer!!! You are one of my favourite lecturer! P.S. Since I've studied integrating in my study plan Lecturio"s lectures by Dr. Meyer, my grades at Histology are significally improved!

Awesome Lecture It Was

By ????? Т. on 03. January 2021 for Enteric Ganglion

It's An Good Overview And Histological Studies Of Ganglion.,But There is Need to Tell Stains Name

Disappointing Lecture

By AUSTIN C. on 02. December 2020 for Major Types of Neurons

Dr. Meyer is a great teacher, a lot from my experience with his videos regarding the introduction to the mammalian cell however, this video definitely left a lot to be discerned and was not very informative. Required me to do a lot of googling to make sense of much of these... Hard to follow and disappointing.

Nerve Tissue

Course Details

Content

Your Educators of course Nerve Tissue

Geoffrey Meyer, PhD

User reviews