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    Types of Membranes in Human Body: Mucous Membrane

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    Irum Rafeeq
    There are five main types of membranes found in the human body: 1) Mucous membranes line cavities that open to the outside and protect against pathogens, secreting mucus. 2) Serous membranes line body cavities and cover organs, secreting fluid to reduce friction. 3) The cutaneous membrane is the skin, the largest organ protecting the body from microbes and environmental factors. 4) The synovial membrane surrounds joints, secreting fluid to lubricate movement. 5) The meninges are three layers covering the brain, with the dura mater preventing excessive movement.

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    Types of Membranes in Human Body: Mucous Membrane

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    Irum Rafeeq
    34 views5 pages
    There are five main types of membranes found in the human body: 1) Mucous membranes line cavities that open to the outside and protect against pathogens, secreting mucus. 2) Serous membranes line body cavities and cover organs, secreting fluid to reduce friction. 3) The cutaneous membrane is the skin, the largest organ protecting the body from microbes and environmental factors. 4) The synovial membrane surrounds joints, secreting fluid to lubricate movement. 5) The meninges are three layers covering the brain, with the dura mater preventing excessive movement.

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    There are five main types of membranes found in the human body: 1) Mucous membranes line cavities that open to the outside and protect against pathogens, secreting mucus. 2) Serous membranes line body cavities and cover organs, secreting fluid to reduce friction. 3) The cutaneous membrane is the skin, the largest organ protecting the body from microbes and environmental factors. 4) The synovial membrane surrounds joints, secreting fluid to lubricate movement. 5) The meninges are three layers covering the brain, with the dura mater preventing excessive movement.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
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    34 views5 pages

    Types of Membranes in Human Body: Mucous Membrane

    Uploaded by

    Irum Rafeeq
    There are five main types of membranes found in the human body: 1) Mucous membranes line cavities that open to the outside and protect against pathogens, secreting mucus. 2) Serous membranes line body cavities and cover organs, secreting fluid to reduce friction. 3) The cutaneous membrane is the skin, the largest organ protecting the body from microbes and environmental factors. 4) The synovial membrane surrounds joints, secreting fluid to lubricate movement. 5) The meninges are three layers covering the brain, with the dura mater preventing excessive movement.

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    of 5

    Types of Membranes in Human

    Body

    There are five types of membranes found within the body. Membranes are flat sheets
    of tissue that cover or line parts of the body and are typically composed of epithelial
    cells and connective tissue. Epithelial cells cover the inner and outer layers of surfaces
    and form glands that secrete fluids. Connective tissue is the most abundant type of
    tissue in the body; it binds and supports the structures of the body.

    MUCOUS MEMBRANE

    Mucous membranes, also called mucosa, line the inside of cavities that open directly to
    the exterior environment. Mucous membranes line the gastrointestinal tract,
    respiratory tract, reproductive tracts and the urinary tract. This type of membrane is
    composed of an epithelial cell layer and an underlying connective tissue layer. The
    epithelial layer is an important defense mechanism that prevents the entry of
    pathogens and microbes into the body. The cells are tightly packed together, so fluid
    cannot leak through the epithelial layer. Specialized cells secrete mucous to keep the
    membrane moist. Mucous also traps dust particles in the respiratory, or lung passage
    ways and lubricates food as it travels through the intestinal tract. The connective tissue
    component of a mucous membrane stabilizes the membrane against the structure it is
    protecting; it also holds blood vessels that supply blood and nutrients to the epithelial
    layer in place.
    f. Mucous membrane, with vessels and part of a
    lymphoid.

    Section of the human esophagus.Moderately magnified. The section is transverse and


    from near the middle of the gullet.

    SEROUS MEMBRANE

    Serous membranes, or serosa, line cavities of the body that do not open directly to the
    external environment; it also covers the organs within the cavities. For example, this
    type of membrane lines the chest and abdominal cavities, in addition to covering the
    liver, spleen, kidneys, heart etc. Serous membranes are made of two layers: a layer to
    line a cavity, called the parietal membrane, and a layer to cover an organ, called the
    visceral layer. Serous membranes secrete a lubricant called serous fluid that allows the
    organs to glide against other structures without causing friction, according to
    "Principles of Human Anatomy".
    CUTANEOUS MEMBRANE

    The cutaneous membrane, also known as the skin, covers the entire body. It is
    composed of many layers of epithelial cells to protect the body from invading microbes
    or pathogens, in addition to light, heat and injury. The skin is the largest organ of the
    body that also stores fat, vitamin D and water and houses the sensory receptors for
    touch and pain. It regulates body temperature by secreting sweat to dissipate heat.

    SYNOVIAL MEMBRANE

    The junction where two bones meet is called a joint. Surrounding freely movable joints
    like the shoulder, elbow, or knee is a synovial membrane. The synovial membrane
    secretes synovial fluid to lubricate the joint space, making motion much easier. The
    synovial fluid also nourishes the cartilage attached to the ends of bones and contains
    immune cells called macrophages that rid the joint space of invading microbes and
    debris, according to "Principles of Human Anatomy".
    MENINGES

    Covering the brain is a dense connective tissue membrane, composed of three layers,
    called the meninges. The outer most layer is called the dura mater; it is a thick
    connective tissue that prevents the brain from moving too much in the skull. The
    second layer is the arachnoid layer; it is a loose connective tissue layer that resembles
    the web of a spider. The inner most layer is the pia mater; it is a thin layer that adheres
    directly onto the brain, according to California State University.

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