ANAT- 3/20/25. Epidermis and Dermis Structures

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A collection of vocabulary flashcards related to the structures and functions of the skin and underlying tissues as discussed in the lecture.

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18 Terms

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Keratinocytes

Cells that produce keratin, a tough protective protein found in the skin.

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Melanocytes

Cells responsible for producing melanin, the pigment that gives color to the skin and hair.

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Merkel Cells

Sensory cells in the skin that are involved in the sensation of touch.

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Langerhans Cells

Immune cells in the skin that help protect against pathogens.

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Dermis

The layer of skin beneath the epidermis that contains blood vessels, nerves, and accessory structures.

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Papillary Layer

The superficial layer of the dermis which contains loose connective tissue and provides nutrients to the epidermis.

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Reticular Layer

The deeper layer of the dermis made of dense irregular connective tissue providing structural support.

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Accessory Structures of the Skin

Includes hair, glands, and nails that are derived from the epidermis and located in the dermis.

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Hair Bulb

The swollen base of a hair follicle where hair growth occurs.

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Erector Pili Muscle

A small muscle attached to hair follicles that contracts to make hair stand upright.

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Sebaceous Gland

Gland in the skin that secretes oil (sebum) to moisturize skin and hair.

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Apocrine Glands

Sweat glands located in specific areas of the body that produce a thicker type of sweat.

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Eccrine Glands

Most common type of sweat gland that produces a watery sweat for thermoregulation.

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Hypodermis

The subcutaneous layer beneath the dermis, primarily made of adipose tissue.

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Adipose Tissue

Fat tissue that stores energy and provides insulation and cushioning.

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Osseous Tissue

The type of connective tissue that forms bone.

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Locomotion

Movement of the body or body parts that is facilitated by the interaction of bones and muscles.

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Minerals stored in bones

Calcium, magnesium, and other vital minerals that are stored in bones.