Integumentary System Overview

Study Notes

Integumentary System Overview

The integumentary system is the body's outer protective layer consisting of skin, hair, nails, and glands.

Epidermis

Outermost layer of the skin, providing a barrier against environmental hazards.
Composed primarily of keratinocytes, which produce keratin for skin strength.

Dermis

Inner layer of the skin located beneath the epidermis.
Contains connective tissue, hair follicles, and glands, providing structural support and elasticity.

Hypodermis

Also known as subcutaneous layer, located beneath the dermis.
Functions in storage of fat, insulation, and protection of underlying structures.

Blood Supply

Integral part of the circulatory system, supplying nutrients and oxygen to skin cells.
Capillaries within the dermis play a crucial role in thermoregulation.

Endocrine Gland (Sweat Gland)

Composed of eccrine and apocrine glands, involved in temperature regulation and excretion.
Eccrine glands produce sweat all over the body, while apocrine glands are concentrated in specific areas.

Hair Follicle

Structure from which hair grows; contains the hair bulb and surrounding dermal papilla.
Plays a role in thermoregulation and can be associated with sebaceous (oil) glands.

Fat (Adipose)

Located in the hypodermis, serves as energy storage and thermal insulation.
Provides cushioning for underlying tissues and organs.

Connective Tissue

Found within the dermis, providing structural integrity and support to the skin.
Contains collagen and elastin fibers, which help maintain skin elasticity and strength.

Description

Explore the key components of the integumentary system with this labeled diagram quiz. Test your knowledge of skin layers, blood supply, and associated structures like sweat glands and hair follicles. Perfect for students studying human anatomy.