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Types of Tissue

By: Kayli Hoffman

Muscle Tissue

Muscle Tissue

Muscle tissue responds to stimulation and contracting to provide movement, and occurs as three main types: skeletal (voluntary) muscle, smooth muscle, and cardiac muscle in the heart. In almost all animals, there is more muscle tissue than any other tissue. Muscle tissue consists of many molecules of contractile proteins, formed into longer muscle fibers.

Skeletal

Of the three supgroups of muscle tissue, skeletal muscle is the type that is under voluntary control. Skeletal muscle is attached to bones by tendons to allow the body to move.

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Skeletal muscle is found in different locations all over the body, including the biceps.

Cardiac

Cardiac muscle is found only in the heart. Both skeletal and cardiac muscle can also be grouped under the term "striated muscle." Most cardiac muscle is under involuntary control.

Cardiac

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Cardiac muscle is exclusively found in the heart.

Smooth

Smooth muscle gets its name from lack of straitions. Smooth muscle is responsible for involuntairy body activities. Smooth muscles contract slower than skeletal muscle, but it can contract for longer than skeletal.

Smooth

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Example

Smooth muscle is found in places like the digestive tract and the blood vessels.

Epithelial Tissue

Epithelial Tissue

Epithelial tissue, also referred to as epithelium, refers to the sheets of cells that cover exterior surfaces of the body, lines internal cavities and passageways, and forms certain glands. The cells in the epithelial group are involved in lining organs, covering the surfaces of the body or gland formation.The primary subcategories of epithelial tissue are based on appearance.

Simple squamous

Simple Squamous

Simple squamous epithelium is a single layer of flat cells in contact with the basal lamina of the epithelium. This type of epithelium is often permeable and occurs where small molecules need to pass quickly through membranes via diffusion.

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Example

Simple squamous epithelial cells in the kidney enable rapid filtration of the blood and diffusion of small molecules. This process allows the kidneys to remove waste products and excess water from the body in the urine.

Simple Cubidal

Simple Cuboidal

Simple cuboidal epithelium is a type of epithelium that consists of a single layer of cuboidal (cube-like) cells. These cuboidal cells have large, spherical and central nuclei.

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Simple cuboidal epithelia are found on the surface of ovaries, the lining of nephrons, the walls of the renal tubules, and parts of the eye and thyroid.

Stratified squamous

Stratified Squamous

Stratified squamous epithelia are tissues formed from multiple layers of cells resting on a basement membrane, with the superficial layer(s) consisting of squamous cells. Underlying cell layers can be made of cuboidal or columnar cells as well.

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Examples

Examples

Simple squamous epithelia are found in capillaries, alveoli, glomeruli, outer layer of skin and other tissues where rapid diffusion is required.

Simple columnar

Simple Columnar

A simple columnar epithelium is a columnar epithelium that is uni-layered. The many layers of stratified squamous epitheium make it well suited for lining surfaces.

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Simple columnar epithelium lines most organs of the digestive tract including the stomach, small intestine, and large intestine. Simple columnar epithelia line the uterus.

Connective Tissue

Connective tissue, as its name implies, binds the cells and organs of the body together and functions in the protection, support, and integration of all parts of the body.

Loose Connective

Loose connective tissue is a category of connective tissue which includes areolar tissue, reticular tissue, and adipose tissue. Loose connective tissue is the most common type of connective tissue in vertebrates. It holds organs in place and attaches epithelial tissue to other underlying tissues.

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It holds organs in place and attaches epithelial tissue to other underlying tissues.

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Fibrous connective

Fibrous Connective

The fibrous connective tissue functions to provide strength to the inner layer of skin and strength, allowing it to handle forces of joint movements. Fibrous connective tissue contains fibroblast cells and is made up of fibrous fibers. It is a dense connective tissue, with its extracellular substance consisting of parallel or irregularly arranged bundles of fibers with few cells and little ground substance.

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Fibrous connective tissue, which is composed of parallel bundles of collagen fibers, is found in the dermis, tendons, and ligaments.

Adipose tissue

Adipose

Adipose is another type of supporting connective tissue that provides cushions and stores excess energy and fat. It contains reticular cells and is made up of reticular fibers. The extracellular substance of adipose connective tissue is made up of a tight pack of cells with a small amount of gelatinous ground substance.

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The tissue is made up of adipocytes and can be found under the skin (subcutaneous adipose tissue) or around the organs (visceral adipose tissue).

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Cartilage

Cartilage is a type of supporting connective tissue. Cartilage is a dense connective tissue, consisting of the chondrocyte cells. Cartilage connective tissue includes hyaline cartilage, fibrocartilage and elastic cartilage. The fibers in the cartilage connective tissue include collagen and elastic fibers. Cartilage connective tissue has limited ground substance and can range from semisolid to a flexible matrix.

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Hyaline cartilage which is found as the embryonic skeleton, costal cartilages, cartilage of the nose, trachea, lining of the ends of some bones and the larynx. Elastic cartilage which is found in the external ear and epiglottis.

Bone

Bone is another type of supporting connective tissue. Bone, also referred to as osseous tissue, can either be compact (dense) or spongy (cancellous), and contains the osteoblasts or osteocytes cells. Bone connective tissue is made up of collagen fibers and has rigid, calcified ground substance.

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There are 206 bones all throughout the human body.

Blood

Blood, also referred to as vascular tissue, is a type of fluid connective tissue. Blood connective tissue contains three types of cells including erythrocytes, leukocytes, and thrombocytes. The fibers found in blood connective tissue are soluble proteins that form during clotting and the extracellular substance making up blood connective tissue is the liquid blood plasma

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Blood is located all over the huma body.

All the nervous tissue cells play roles in informational sensation or transfer around the body. The nervous tissue group is split up into neurons, which are the cells that transmit information, and support cells. There are various types of support cells, all of which may be referred to as "glia." The glia in the brain and spinal cord include the oligodendrocytes, astrocytes, microglia and ependymal cells. Oligodendrocytes provide myelin to insulate neurons and astrocytes have several functions such as protecting the blood-brain barrier. Microglia are part of the immune defense system and ependymal cells make cerebrospinal fluid for a healthy brain. For nervous tissue outside of the spinal cord and brain, the main support cells are called Schwann cells and satellite cells. Schwann cells wrap neurons in myelin for insulation, and satellite cells are similar to astrocytes.

Nervous

All the nervous tissue cells play roles in informational sensation or transfer around the body.

Nervous Tissue

Neuron

a specialized cell transmitting nerve impulses; a nerve cell.

Neuron

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Neurons are found in clusters.

Support Groups

Support Cells

There are various types of support cells, all of which may be referred to as "glia." The glia in the brain and spinal cord include the oligodendrocytes, astrocytes, microglia and ependymal cells. Oligodendrocytes provide myelin to insulate neurons and astrocytes have several functions such as protecting the blood-brain barrier. Microglia are part of the immune defense system and ependymal cells make cerebrospinal fluid for a healthy brain. For nervous tissue outside of the spinal cord and brain, the main support cells are called Schwann cells and satellite cells. Schwann cells wrap neurons in myelin for insulation, and satellite cells are similar to astrocytes.

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Support cells are found alongside neurons.

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Work cited

https://www.google.com/search?q=support+cells&safe=active&rlz=1C1GCEA_enUS770US770&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj60vvM3KXaAhUEtlMKHQbABXkQ_AUICigB&biw=1366&bih=588&surl=1#imgrc=t852vwTi7p4qDM:

Work Cited

https://classroom.synonym.com/subcategories-major-tissue-types-anatomy-physiology-33880.html

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