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    From Integumentary System

    Mammary Glands
    Glands in females that produce milk during lactation.
    Melanin
    Pigment responsible for skin color.
    Apocrine Sweat Glands
    Sweat glands found in the armpits and genital areas.
    Merkel Discs
    Receptors that detect light touch and pressure.
    Papillary Layer
    Upper layer of dermis, containing capillaries and sensory neurons.
    Ceruminous Glands
    Specialized sweat glands in the ear canal that produce earwax.
    Sebaceous Glands
    Glands that produce sebum (oil) to lubricate skin and hair.
    Lymphatic Vessels
    Vessels responsible for transporting lymph throughout the skin.
    Skin
    The body's largest organ, which protects internal structures and regulates temperature.
    Pheomelanin
    Type of melanin that produces yellow and red pigmentation.
    Carotene
    Pigment contributing to the yellow-orange coloration of the skin.
    Nails
    Hard, keratinized extensions at the tips of fingers and toes.
    Dermis
    Layer below the epidermis providing structure and flexibility.
    Ruffini Endings
    Receptors that detect skin stretch and finger position.
    Reticular Layer
    Deeper dermal layer, housing collagen and elastin fibers.
    Hair
    Strands of keratinized cells that grow from follicles beneath the skin.
    Stratum Spinosum
    Layer providing strength and flexibility to skin.
    Free Nerve Endings
    Pain receptors (nociceptors) and temperature receptors.
    Stratum Corneum
    Outermost layer of epidermis composed of dead, flattened skin cells.
    Nail Bed
    Skin under the nail plate, supplying nutrients.
    Arrector Pili Muscle
    Small muscle attached to hair follicles causing hair to stand up.
    Hypodermis
    Also called subcutaneous layer, consisting of fat and connective tissue.
    Hemoglobin
    Oxygen-carrying protein in blood responsible for the red coloration of skin.
    Hair Bulb
    Base of the hair follicle where cells divide and produce the hair shaft.
    Hair Root
    Part of hair within the follicle, undergoing growth.

    Stratum Granulosum

    Reviewed by our medical team

    Layer of epidermis where keratinization begins.

    Did you know? The skin can heal itself rapidly when damaged, such as when a cut or scrape causes a scab to form.