Histology Photo Similes
Caspian Brenner
Histology
Epithelial tissue is made up of layers of cells covering exterior body surfaces as well as internal passageways and cavities. They also form glands.
Muscle tissues can be contracted and provide movement. They are classified as being either skeletal, smooth or cardiac.
Connective tissue connects other tissues by binding different tissues together while supporting functions within each by offering protection from physical trauma and defending from infection.
Nervous Tissue is a able to send and receive electrochemical signals to inform seperate body regions and carry information between them.
Epithelial: Simple Squamous
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Where this tissue is found in the body:
Simple squamous tissue is found where organs require thin coatings allowing for diffusion such as in the lining of the heart, blood vessels, and lymphatic vessels.
Epithelial: Simple Cuboidal
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Where this tissue is found in the body:
Simple cuboidal cells can be found in the lining of kidney tubules for absorption and in the ducts of glands for secretion.
Epithelial: Simple Columnar
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Where this tissue is found in the body:
Simple columnar cells line the digestive tract and the female reproductive tract. Often they are ciliated which aids in their role.
Epithelial: Stratified Squamous
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Where this tissue is found in the body:
Stratified squamous tissue can be found in the keratinized capacity as the dry skin of the body. In non-keratinized form, it coats the inside of the mouth.
Epithelial: Pseudostratified Ciliated Columnar
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Where this tissue is found in the body:
Psuedo-Stratified columnar cells, like simple columnar cells, are often ciliated and aid in the respiratory tract.
Connective: Bone
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Where this tissue is found in the body:
Bone tissue makes up the human skeleton which both supports and protects the organs of the human body.
Connective: Cartilage
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Where this tissue is found in the body:
Cartilage forms the flexible support of the body and is present everywhere from joints (such as in the ribs or the knee) to various features such as the nose and ears.
Connective: Adipose
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Where this tissue is found in the body:
White adipose cushions the kidneys and the back of the eyes. Brown adipose is found in the neck and clavicular regions.
Connective: Loose
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Where this tissue is found in the body:
Loose connective tissue and its various sub varieties can be found between organs in order to hold them together and cushion them from impacts.
Connective: Dense
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Where this tissue is found in the body:
Regular dense connective tissue can be found in the ligaments of vocal folds and between vertebrae. Irregular dense connective tissue is found in arterial walls and the dermis.
Connective: Blood
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Where this tissue is found in the body:
Blood tissue is found throughout the body as blood vessels circulate throughout all its components transporting blood cells and various nutrients.
Connective: Areolar
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Where this tissue is found in the body:
Areolar connective tissue surrounds all sorts of organs from muscles to blood vessels and supports them as well. It forms the medium by which the Epithelium is attached to organs.
Muscle: Cardiac
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Where this tissue is found in the body:
Cardiac muscle is unique in that it is found exclusively in the walls of the heart.
Muscle: Smooth
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Where this tissue is found in the body:
Smooth muscle can be found in the walls of major organs, such as in the respiratory or circulatory system.
Muscle: Skeletal
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Where this tissue is found in the body:
Skeletal muscles are attached directly to, and function in order to move the human skeleton as well as in the mouth and the anus.
Nervous
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Where this tissue is found in the body:
Nervous tissue transmits information throughout both the central nervous system (the brain and the spine) as well as the peripheral nervous system. They are found throughout the body in these two realms.