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Intro to histology/ Leslie Vieyra P2 - Coggle Diagram
Intro to histology/ Leslie Vieyra P2
nervous tissues: (found in the brain,
spinal cord and nerves)
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neurons: designed to transmit information to other nerve cells, muscle, or gland cells. Neurons have a cell body, axon, and dendrites.
epithaleal tissues: they form the covering of all body surfaces , line body cavities and hollow organs
simple squamous epithelium: made up of a single layer of thin, flattened cells and is found in diffusion and filtration sites, as well as functions in the exchanges of gases in the alveoli of the lungs.
simple cuboidal epithelium: consist of a single layer of cube shaped cells with centrally located nuclei and functions in urine formation in kidney's and glandular secretion
simple columnar epithelium: it is made up of one row of tall elongated cells ( or cells that may be ciliated or non ciliated) functions: secrete enzymes
pseudostratified columnar epithelium: cells appear layered due to the varying positions of their nuclei within the row of cells (goblet cells are scattered among the epithaleal cells; secretes mucus)
stratified squamous epithelium: made up of many layers of flattened cells, designed to protect underlying layers, makes up the outer layer of skin (epidermis) and lines the mouth , esophagus, vagina, and anal canal
stratified cuboidal epithelium: consist of 2-3 layers of cuboidal cells, forms lining of a lumen, provides greater protection than a single cell layer
stratified columnar epithelium: consist of several layers of cells, a rare type of od tissue, found in the male urethra and linings of large gland ducts
transitional epithelium: designed to distend and return to its normal size in response to changing tension, is found in the linings of urinary bladder, urethra, and ureters. ( functions as an expandable lining and prevents urine from diffusing back into the internal environment)
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types of membranes
epithelial membranes
mucous membranes: the moist, inner lining of some organs and body cavities ( such as the nose , mouth, lungs, and stomach)
cutaneous membrane: the skin ( role is to protect the rest of the body's tissues and organs from physical damage
serous membranes: membranes lining the closed internal body cavities ( consists of simple squamous epithelium and a layer of areolar connective tissue
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muscular tissues: (composed of cells that have the special ability to shorten or contract in order to produce movements of the body parts)
smooth muscle tissue: its cells lack striations, it is found in the walls of hollow internal organs, such as in the digestive tract , blood vessels and urinary bladder.
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cardiac muscle tissue: it can only be found in the heart and cannot be controlled by conscious effort (also has striped appearance)
connective tissues
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dense connective tissue: found in the tendons , ligaments, and deep layers of skin
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