THE STATUS OF RESEARCH ON THE REPAIR AND REGENERATION OF NERVOUS TISSUE OF THE CENTRAL NERVOUS STYSTEM The Status of Research On The Repair Of Nervous Tissue Of The Central Nervous System Lekisha Johnson Virginia College At Austin THE STATUS OF RESEARCH ON THE REPAIR AND REGENERATION OF NERVOUS TISSUE OF THE CENTRAL NERVOUS Today‚ most treatments for damage brain or spinal cord aim to relieve symptoms and limit further damage. But recent research into regeneration mechanism
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Section 6 Types of Tissue OBJECTIVES: Upon completing this section‚ you will be able to: 1. Define the word histology. 2. Name and briefly describe the four basic types of tissue. 3. Name the three subtypes of simple epithelial tissue. 4. List the five main subtypes of connective tissue. 5. Name the three subtypes of muscle tissue. 6. Name the two types of nerve tissue. 68 Section 6 Types of Tissue HISTOLOGY Histology is the microscopic study of cells‚ tissues‚ and organs. Also called
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Classification of Tissues Introduction Cells are the smallest units of life. In complex organisms‚ cells group together with one another based on similar structure and function to form tissues .Tissues provide the numerous functions of organs necessary to maintain biological life. This lab exercise seeks to introduce the various tissues found in the human body and to familiarize you with their composition and function. The study of tissues is called histology ‚ and is important to the understanding
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[pic] BECOMING A FACIAL DECODER We mentioned previously that some researchers- the psychologist Paul Ekman is the best known- have studied whether facial expression reveal true emotions. These researchers have distinguished real smiles (so called Duchenne smiles‚ named after French physician Guillaume Duchenne) from fake smiles. Duchenne found genuine smile raised not only the corners of the mouth (easily faked) but also cheek and eye muscles (much more difficult to fake)
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Cells of the body are organized into four fundamental tissues; epithelial‚ connective‚ muscle and nerve. Epithelial tissues line all surfaces of the body: the skin‚ cavities‚ ducts‚ vessels. They are named according to the cell shape on the free surface. Cells of a tissue are held together by the basement membrane and intercellular fibbers. These tissues receive their nutrition by diffusion‚ for they are without blood vessels. Simple squamous epithelium lines all blood and lymphatic vessel‚ including
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Connective Tissue Characteristics of connective tissues • Extracellular matrix separates cells • Most widely variable of tissues • Many varied functions • Common (mesenchyme) origin • Degrees of vascularity Functions • Binding • Suport • Protection • Insulation • Transport Structural Elements • Fibers ⁃ Collagen (white) fibres ⁃ Elastin (yellow) fibers ⁃ Reticular fibers • Ground substance ⁃ Amorphous material fills space between cells and contains fibers
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Epithelial Tissue covers body surfaces (epi‚ on + thelium‚ surface). Epithelial tissue consists of cells attached to one another to form an uninterrupted layer of cells that separates the underlying tissues from the outside world. The body’s epithelium not only covers its obvious surfaces (such as the epidermis of the skin and the linings of respiratory‚ urinary‚ and digestive tracts) but also extends into all of the complex invaginations which form lungs‚ kidneys‚ sweat glands‚ digestive glands
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The lungs are made up of many types of tissue; the cartilages‚ ciliated epithelium‚ smooth muscle‚ squamous epithelium‚ elastic fibres and goblet cells and glandular tissue. The cartilage is a very stiff and flexible tissue‚ which doesn’t contain air vessels. It is found in trachea‚ bronchus‚ bronchiole and alveolus‚ and it has a structural role. It support‚ and gives strength to trachea and bronchi. It holds the airways open for the resistance with little airway. This prevents it from collapse
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communication can be in the forms of facial expressions‚ gestures‚ body language and posture‚ eye gaze‚ blinking of eyes‚ and lips or mouth. Demonstrative communication can be effective and ineffective‚ positive and negative‚ for the sender and receiver‚ and involves listening and responding. Communication is around us every day and having effective communications skills will help a conversation flow properly. Demonstrative communication can be in the form of facial expressions‚ gestures‚ body language
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QUILONA‚ KLARISSE JANE A. BSP-1B Animal Tissues 1. Epithelial Epithelial tissue is made of closely-packed cells arranged in flat sheets. Epithelia form the surface of the skin‚ line the various cavities and tubes of the body‚ and cover the internal organs. Subsets of Epithelia Epithelia that form the interface between the internal and external environments. Skin as well as the lining of the mouth and nasal cavity. These are derived from ectoderm. Inner lining of the GI tract‚ lungs‚ urinary
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