Many layers of keratinized, dead epithelial cells that are flattened and non-nucleated. Outermost Layer.

Cells appear clear; nuclei, organelles, and cell membranes are no longer visible. Located between stratum corneum and stratum granulosum. Ex: Soles and palms

Three to five layers of flattened granular cells that contain shrunken fibers of keratin and shriveled nuclei. Beneath the stratum corneum.

Many layers of cells with centrally located, large, oval nuclei and developing fibers of keratin; cells becoming flattened. Beneath the stratum granulosum.

Stratum Basale (Basal Cell Layer)

A single row of cuboidal or columnar cells that divide and grow; this layer also includes melanocytes. Deepest layer.

Process by which cells form fibrils of keratin and harden.

Binds the epidermis to the underlying tissues. Composed of dense irregular connective tissue that includes tough collagenous fibers and elastic fibers in a gel-like ground substance.

Subcutaneous Layer (Hypodermis)

Loose connective tissue layer that is mostly far and beneath the skin.

Extends from the surface into the dermis and contains the hair root, the portion of hair embedded in the skin.

Contains groups of specialized epithelial cells and are usually associated with hair follicles. They are holocrine glands and their cells produce globules of a fatty material that accumulate, swell and burst the cells. Ex: Keep hair soft and pliable

Sweat Glands (Sudoriferous Glands)

Each gland consists of a tiny tube that originates as a ball-shaped coil in the deeper dermis or superficial subcutaneous layer. The coiled portion of the gland is closed at its deep end and is lined with sweat-secreting epithelial cells.

Respond throughout life to body temperature elevated by environmental heat or physical exercise.

Develop a scent as skin bacteria metabolize them. Wet skin during pain,fear,emotional upset,and sexual arousal. Ex: Armpit,groin,around nipples

Modified sweat glands. Secrete earwax. Ex: External ear canal

Modified sweat glands. Secrete milk. Ex: Breasts

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Exam 2 Chapter 6 Obj

Vocabulary Words/Integumentary System

Question	Answer
Stratum Corneum	Many layers of keratinized, dead epithelial cells that are flattened and non-nucleated. Outermost Layer.
Stratum Lucidum	Cells appear clear; nuclei, organelles, and cell membranes are no longer visible. Located between stratum corneum and stratum granulosum. Ex: Soles and palms
Stratum Granulosum	Three to five layers of flattened granular cells that contain shrunken fibers of keratin and shriveled nuclei. Beneath the stratum corneum.
Stratum Spinosum	Many layers of cells with centrally located, large, oval nuclei and developing fibers of keratin; cells becoming flattened. Beneath the stratum granulosum.
Stratum Basale (Basal Cell Layer)	A single row of cuboidal or columnar cells that divide and grow; this layer also includes melanocytes. Deepest layer.
Keratinization	Process by which cells form fibrils of keratin and harden.
Melanocytes	Melanin-producing cell.
Dermis	Binds the epidermis to the underlying tissues. Composed of dense irregular connective tissue that includes tough collagenous fibers and elastic fibers in a gel-like ground substance.
Subcutaneous Layer (Hypodermis)	Loose connective tissue layer that is mostly far and beneath the skin.
Hair Follicle	Extends from the surface into the dermis and contains the hair root, the portion of hair embedded in the skin.
Sebaceous Glands	Contains groups of specialized epithelial cells and are usually associated with hair follicles. They are holocrine glands and their cells produce globules of a fatty material that accumulate, swell and burst the cells. Ex: Keep hair soft and pliable
Sweat Glands (Sudoriferous Glands)	Each gland consists of a tiny tube that originates as a ball-shaped coil in the deeper dermis or superficial subcutaneous layer. The coiled portion of the gland is closed at its deep end and is lined with sweat-secreting epithelial cells.
Eccrine Glands	Respond throughout life to body temperature elevated by environmental heat or physical exercise.
Apocrine Glands	Develop a scent as skin bacteria metabolize them. Wet skin during pain,fear,emotional upset,and sexual arousal. Ex: Armpit,groin,around nipples
Ceruminous Glands	Modified sweat glands. Secrete earwax. Ex: External ear canal
Mammary Glands	Modified sweat glands. Secrete milk. Ex: Breasts

Created by: Sarah_sem

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