Core - Anatomy and Physiology

    Chapter 9

    The Integumentary System

    9.1 : Introduction to the Integumentary System01:25

    9.1 : Introduction to the Integumentary System

    The integumentary system is the organ system that comprises the skin and its associated structures. It is the largest system in the human body and plays a ...

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    9.2 : Cells of the Epidermis01:24

    9.2 : Cells of the Epidermis

    The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the ...

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    9.3 : Layers of the Epidermis01:21

    9.3 : Layers of the Epidermis

    The epidermis, the outermost layer of the skin, is composed of several distinct layers. From deep to superficial, the layers of the epidermis are as ...

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    9.4 : Papillary Dermis01:11

    9.4 : Papillary Dermis

    Dermis The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and ...

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    9.5 : Reticular Dermis01:15

    9.5 : Reticular Dermis

    The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the ...

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    9.6 : Hypodermis01:02

    9.6 : Hypodermis

    The hypodermis (the subcutaneous layer or superficial fascia) is present directly below the dermis. It connects the skin to the underlying fascia (fibrous ...

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    9.7 : Pigmentation01:19

    9.7 : Pigmentation

    The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called ...

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    9.8 : Changes in Skin Color: Clinical Perspectives01:14

    9.8 : Changes in Skin Color: Clinical Perspectives

    The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are ...

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    9.9 : Accessory Structures of the Skin: Hair and Hair Follicles01:16

    9.9 : Accessory Structures of the Skin: Hair and Hair Follicles

    Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. ...

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    9.10 : Accessory Structures of the Skin: Hair Growth and Types01:20

    9.10 : Accessory Structures of the Skin: Hair Growth and Types

    Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft ...

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    9.11 : Accessory Structures of the Skin: Nails01:05

    9.11 : Accessory Structures of the Skin: Nails

    Nails are one of the important accessory structures of the skin. They are hard, protective structures that cover the dorsal surface of the distal ...

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    9.12 : Accessory Structures of the Skin: Sweat Glands01:20

    9.12 : Accessory Structures of the Skin: Sweat Glands

    Sweat glands or sudoriferous glands are one of the important accessory structures of the skin. They are small, coiled tubular structures located in the ...

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    9.13 : Accessory Structures of the Skin: Sebaceous Glands01:21

    9.13 : Accessory Structures of the Skin: Sebaceous Glands

    A sebaceous gland is a type of oil gland found almost all over the skin ( except palms and soles) and helps lubricate and waterproof the skin and hair. ...

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    9.14 : Sensory Functions of the Skin01:16

    9.14 : Sensory Functions of the Skin

    The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that ...

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    9.15 : Role of Skin in Vitamin D Synthesis01:23

    9.15 : Role of Skin in Vitamin D Synthesis

    The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because ...

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    9.16 : Skin Diseases and Disorders01:23

    9.16 : Skin Diseases and Disorders

    Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the ...

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    9.17 : Skin Cancer01:30

    9.17 : Skin Cancer

    Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. ...

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    9.18 : Burn Injuries01:22

    9.18 : Burn Injuries

    Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can ...

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