intergumentary system

Integumentary System

Membrane covering body, includes skin and glands.

Epidermis

Outermost skin layer, provides barrier.

Dermis

True skin layer with connective tissue.

Subcutaneous Layer

Inner layer, connects skin to muscles.

Sebaceous Glands

Oil glands producing sebum for skin protection.

Sudoriferous Glands

Sweat glands that regulate body temperature.

Melanocytes

Cells producing melanin, affecting skin color.

Functions of Skin

Seven key roles including protection and sensation.

Skin Protection

Barrier against UV rays and pathogens.

Sensory Perception

Nerves detect pain, pressure, temperature, touch.

Body Temperature Regulation

Dilates to release heat, contracts to retain.

Storage Function

Stores fat, glucose, water, vitamins, and salts.

Absorption Function

Allows transdermal medication entry.

Excretion Function

Removes salt, water, heat, and waste.

Vitamin D Production

Skin synthesizes vitamin D upon UV exposure.

Skin Color

Determined by inherited pigments in epidermis.

Melanin

Pigment providing brownish-black skin color.

Carotene

Pigment giving yellowish-red skin tone.

Skin Eruptions

Includes macules, papules, vesicles, and pustules.

Basal Cell Carcinoma

Slow-growing skin cancer from basal cells.

Squamous Cell Carcinoma

Quickly spreading skin cancer from epithelial cells.

Melanoma

Most dangerous skin cancer from melanocytes.

Skin Turgor

Skin's resistance indicating hydration status.

Abnormal Skin Colors

Conditions like jaundice, erythema, and cyanosis.