The function of nervous tissue anatomy and physiology i. Wheaters nervous tissues and central nervous system. Nervous tissue is composed of two major types of cells. Peripheral nervous system pnsall cranial and spinal nerves and their associated roots and ganglia functional pns divisions. The nervous tissue is a large part of the tissues of that makes up the central nervous system. Both neurons and glia have fine processes projecting from the cell body, which generally cannot be resolved in the light microscope without special staining techniques. Detailed information about cell structure is described. Doc histology of nervous tissue ha nguyen academia. Lectures will provide you with an outline of the topic, but you are expected to supplement the information with private study. F1a is composed largely of nerve cells, the neurons, and their cytoplasmic processes together with a specialized type of supporting tissue, the neuroglia. Department of anatomy and neurobiology, virginia commonwealth university, richmond, virginia, usa. Scattered around the neuron are many neuroglial cells, which in addition to neurons are the.
Skeletal muscle and nervous tissue motor end plate. The link will take action how you will acquire the histology of nervous tissue exercise 17. They do not necessarily represent the quality of questions which will appear on the unit evaluation. Nervous tissue is composed of two types of cells, neurons and glial cells. Cell body perikaryonsoma a single axon multiple dendrites07122012 3. The cellular unit of the nervous system is the neuron. Take the quiz below on the nervous tissue and be on your way to passing it. Cell body perikaryon central portion of the cell generally are polygonal different shape and size characteristic regions of nervous system. Nervous tissue, with many interconnections, forms a complex system of neuronal communication within the body and is specialized for detecting stimuli, integrating functions, controlling effectors and higher functions. It has a cshape, it is closely related to the head of the pancreas and consists of four sections.
Anatomically the nervous system is divided into the cns and pns, which have the major components shown in the diagram functionally the nervous system consists of. Nervous tissue controls and integrates all body activities within limits that maintain life three basic functions 1. Extends from the cns to structures of the body viscera or periphery. Inderbir singhs textbook of human histology pdf free. Based on morphological and functional characteristics, classic histology describes only four types of fundamental tissues. It is divided anatomically into the central nervous system and the peripheral nervous system.
Nervous tissue is massed in or near the central nervous system and sends out branches to innervate nearly all parts of the body. Histology and virtual microscopy learning resource. Having looked at the components of nervous tissue, and the basic anatomy of the nervous system, next comes an understanding of how nervous tissue is capable of communicating within the nervous system. Sensory division afferent somatic sensory input perceived consciously eg, from eyes ears, skin, musculoskeletal structures. Central nervous system cns, consisting of the brain and spinal cord. Peripheral nervous system pns, composed of the cranial, spinal, and peripheral nerves conducting impulses to and from the cns sensory and motor nerves, respectively and ganglia that are small aggregates of nerve cells outside the cns. However, the cd in soft file will be then simple to retrieve every time. Central nervous system cns the cns consists of the brain encephalon, which is enclosed in the skull, and the spinal cord, which is contained within the vertebral canal.
The duodenum is the first of the three parts of the small intestine that receives partially digested food from the stomach and begins with the absorption of nutrients. Organs are assembled from the four basic types of tissues and have cells with specialized functions. The nervous tissue is an assemblage of cells and supportive elements materials in which there is a predominance of cells which are highly specialized in the property of excitability and conductivity, whereby they are capable of generating and conducting electrochemical wave along their. Distinguish the major functions of the nervous system. Histology revised spring, 2012, page 2 of 17 activity 1. Nervous tissue characteristics, structure, function. Summary bones and skeletal tissues ch6 summary cells the living units ch3. The two major classes of cells that make up the nervous tissue are nerve cells, neurones, and supporting cells, glia. They are electrically active and release chemical signals to target cells.
Histology of neuron principle cells of nervous tissue consist of 3 parts. Nervous tissue is made up of just 2 types of cells. Terms in this set 40 the basic functional unit of the nervous system is the neuron. Brain, spinal cord, and nerves are composed of nervous tissue, they are specialized for being stimulated to transmit. Microfilaments and associated proteins together generate the forces necessary for cellu.
Nervous system is divided anatomically into two major components. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Nervous tissue neuroglia or glial cells structural, supportive, insulating neurons excitatory. Microscopic observation of epithelial tissue epithelial tissue covers body surfaces, lines the lumens of body tubes and lines most of the body cavities. This website contains more than 180 em photographs i. Textbook of histology a practical guide jp gunasegaran pdf. Nervous or the nerve tissue is the main tissue of our nervous system. Central nervous system cns consists of the brain and spinal cord. Find, read and cite all the research you need on researchgate. Nervous tissue, also called neural tissue, is the main tissue component of the nervous system. Apr 30, 2020 histology of the duodenum histologically the duodenum is similar to all the other hollow organs of the gastrointestinal tract.
This quiz only covers material that one would be expected to discuss in a histology laboratory. The mucosa consists of simple columnar epithelium lamina epithelialis, a connective tissue layer lamina propria and a smooth muscle layer lamina muscularis. The following questions are designed for introductory drill. Name four types of neuroglia in the cns, and list a function for each of these cells. Epithelium forms internal or external linings of organs and glands. Dark neurons are the most common histologic artifact but, with experience, can readily be distinguished. It is directly attached to the pylorus of the stomach. The nerve trunks of the peripheral nervous system are composed of nerve cell. It consists of groups of neurones ganglion cells, called ganglia, feltworks of nerve fibres, called plexuses, and bundles of parallel nerve fibres that form the nerves and nerve roots. Neurons are the primary type of cell that most anyone associates with the nervous system. Questions are provided for the most important slides of this chapter.
The basic histology component of the course will concentrate on the microanatomy of the four basic tissues, namely. The basic functional unit of the nervous system is the neuron. They are responsible for the computation and communication that the nervous system provides. There will be a more comprehensive and indepth packet about nervous tissue and how it applies to the functionality. Histology of nervous tissue flashcards easy notecards. The histology of the nervous tissue reveals neurons and neuroglia that propagate nerve impulse to internal and external stimuli. Apart from these, it also discusses oral cavity and related structures, oesophagus, stomach, and intestines and the urinary organs. Connective tissue proper of the nervous tissue which include. The nervous tissue is an assemblage of cells and supportive elements materials in which there is a predominance of cells which are highly specialized in the property of excitability and conductivity, whereby they are capable of generating and conducting electrochemical wave along their plasma membrane. The present updated edition is an illustrated account of microscopic structures of tissues and organs in a simple and precise. Histology is the science of the microscopic structure of cells, tissues and organs. Astrocytes star cells oligodendrocytes few tree microglia small ependyma above garment neuroglial cells of pns. The intent of this article is to assist pathologists inexperienced in examining central nervous system cns sections to recognize normal and abnormal cell types as well as some common artifacts. Histology of the central nervous system article pdf available in toxicologic pathology 391.
Note the initial portions of the dendrites and axon that arise from the neuronal body. Surrounds all of the neuron processes contributing to a nerve. They are highly specialized to transmit nerve impulses. Neurons are the basic functional units of nervous tissue. Visceral sensory input not perceived consciously eg, from internal organs and cardiovascular. With the final exam almost upon us it is important to ensure that we get a head on our revision and stand a better chance of passing.
Institute of histology and embryology faculty of medicine comenius university in bratislava 2020, march 14 histology lecture. Inderbir singhs textbook of human histology pdf free download direct link august 30, 2018 by themedicostimes the book inderbir singhs textbook of human histology with colour atlas and practical guide gives comprehensive information about human histology. Be able to identify tissues in the nervous system nerves, cell bodies and ganglia, and white vs. The pns comprises all nervous tissue outside the brain and spinal cord. Tissues histology lecture goals to learn the major types and subtypes of. Introduction muscle tissue is composed of cells differentiated for optimal use of the universal cell property termed contractility. Apr 28, 2018 detailed information about cell structure is described. Pdf histology of the central nervous system researchgate. It monitors and regulates the functions of the body. A bundle of neuron processes wrapped in connective tissue wrappings. By examining a thin slice of bone tissue under a microscope, colorized with special staining techniques, you see that these seemingly simple bones are actually a complex microworld. Connective tissue of the blood vessels of the nervous tissue. Before getting to the nuts and bolts of how this works, an illustration of how the components come together will be helpful.
The connective tissue coat that covers each individual peripheral nerve is called perineurium. Cd68 ed1, a glycoprotein expressed predominantly on. Nervous tissue digital histology wiley online library. Monitoring changes in internal and external environment stimuli. Nervous tissue contains two basic categories of cells. Cell body perikaryonsoma a single axon multiple dendrites07122012 3 3. Neurons nerve cells the structural and functional units of the nervous system, which transmit electrochemical impulses supporting neuroglial cells nonconducting, morphologically diverse cells neurons neuroglia 10 20times more abundant. This is a section of the spinal cord revealing the cell body of one of the large alpha motor neurons. Tissues 4 basic types epithelial connective muscular nervous. It mainly consists of two main groups of cells, which are the neurons and the neuroglia. The nerves that emerge from the spinal cord and brain to pass to parts of the body are the peripheral nervous tissue pns. Nervous tissue consist of 2 principal type of cells. The nervous system consists of all nervous tissue in the body. Name four types of neuroglia in the cns, and list at least four functions of these cells.
As a cover, there is free space on one side of the tissue and other cells located on the other side of the epithelial. The connective tissue coat that covers each individual peripheral. The book discusses epithelia, glands, general connective tissue, blood and the mononuclear phagocyte system, cartilage, bone, muscle, etc. Histology a microscopic study of human body tissues and. This book is designed for undergraduate medical and dental students. Neurons structural and functional unit of the nervous system. The human body comprises simultaneous functions carried out by numerous internal systems, each more intricate than the other, but equally important. Aug 30, 2018 inderbir singhs textbook of human histology pdf free download direct link august 30, 2018 by themedicostimes the book inderbir singhs textbook of human histology with colour atlas and practical guide gives comprehensive information about human histology. Connective tissue sheath of the peripheral nerves, which include see diagram 1. It also helps us understand the relationship between structure and function.
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