Integumentary System Components Flashcards

Study Notes

Components of the Integumentary System

Comprises multiple layers and structures essential for protection, sensation, and thermoregulation.

Epidermis

The outermost layer of skin, composed of stratified squamous epithelial cells.
Responsible for barrier function, housing keratinocytes, melanocytes, and Langerhans cells.

Dermis

Situated beneath the epidermis, this layer provides strength and elasticity through collagen and elastin fibers.
Contains blood vessels, lymphatic vessels, and nerve endings.

Papillary Layer

The uppermost part of the dermis, characterized by thin collagen fibers.
Contains dermal papillae that enhance the grip of the skin and support the epidermis.

Reticular Layer

The deeper portion of the dermis, consisting of dense irregular connective tissue.
Houses most skin structures like sweat glands, sebaceous glands, and hair follicles.

Hypodermis

Also known as subcutaneous tissue, it is the layer beneath the dermis.
Composed mainly of adipose tissue, it provides insulation, cushioning, and energy storage.

Hair Shaft

The visible part of hair that extends above the skin surface.
Composed of dead keratinized cells that provide protection and present aesthetic features.

Pore of Sweat Gland Duct

The opening through which sweat is excreted onto the skin surface.
Plays a critical role in thermoregulation and maintaining body temperature.

Touch Receptor

Specialized nerve endings responsible for the sense of touch.
Located in the skin, providing the ability to perceive tactile sensations.

Sebaceous Gland

Produces sebum, an oily substance that moisturizes the skin and hair.
Helps in protecting skin from infections and maintaining skin barrier integrity.

Arrector Pili Muscle

Small muscles attached to hair follicles that contract to make hair stand up (goosebumps).
Contributes to thermoregulation by trapping air and providing insulation.

Sweat Gland Duct

The duct that transports sweat from sweat glands to the skin surface.
Essential for excretion of waste products and thermoregulatory functions.

Pressure Receptor

Mechanoreceptors that respond to deep pressure and texture.
Enhance the ability to detect environmental stimuli.

Hair Follicle

A dynamic organ from which hair grows, embedded in the dermis.
Contains the hair bulb and is responsible for hair development and regeneration.

Sweat Gland

Multicellular structures found in the dermis that produce sweat.
Crucial for thermoregulation and excretion of metabolic waste.

Fat

Found within the hypodermis, serving as insulation and energy reserve.
Plays a vital role in cushioning and protecting underlying structures.

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Test your knowledge on the components of the integumentary system with these flashcards. Each card includes a labeled diagram and definitions for terms such as epidermis, dermis, and hypodermis. Perfect for students studying anatomy and physiology.

Integumentary System Components Flashcards

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