Anatomy of the Integumentary System

Questions and Answers

Which of the following correctly describes erythema?

Small red-purple spots on skin

Redness of the skin (correct)

Decreased skin elasticity

Oil from hair follicle

What primary function do eccrine glands serve in the integumentary system?

Temperature control and moisture (correct)

Secretion of oil from hair follicles

Production of ear wax

Protection against pathogens

What structural change in older adults often contributes to decreased skin turgor?

Enhanced elasticity of skin

Increase in subcutaneous tissue

Thickening of the dermis

Dermal thinning (correct)

Which of the following best characterizes petechiae?

Small red and purple spots on the skin Signup and view all the answers

What is the primary role of sebaceous glands in the skin?

Produce oil to keep skin and hair moisturized Signup and view all the answers

What term refers to clear wound drainage?

Serous Signup and view all the answers

Study Notes

Key Terms in Integumentary System

Alopecia: Refers to hair loss, which can be partial or complete.
Ecchymosis: A medical term for a bruise; results from bleeding under the skin.
Erythema: Indicates redness of the skin, often due to inflammation or irritation.
Petechiae: Small, red-purple spots on the skin caused by bleeding under the skin.
Turgor: A measure of skin elasticity, indicating hydration status.

Structure and Functions of the Integumentary System

Epidermis: Outermost layer of skin; contains melanin for color and keratin for water repellence.
Functions of Epidermis:
- Protects underlying tissues
- Retains bodily fluids
- Regulates body heat
Dermis: Deeper layer of skin containing essential structures.
Components of Dermis:
- Blood vessels for circulation
- Nerve endings that facilitate sensation
- Lymphatic vessels connected to the immune system
- Hair follicles for hair growth
- Sebaceous glands that produce oil
- Sweat glands for temperature regulation

Functions of Glandular Secretions

Sebaceous Glands: Produce oil that moisturizes and protects hair follicles.
Ceruminous Glands: Located in the ear, they produce earwax for protection and lubrication.
Eccrine Glands: Sweat glands that help in cooling the body, protecting the skin, and maintaining moisture.

Skin Changes in Older Adults

Decreased Subcutaneous Tissue: Leads to less insulation and altered body temperature control.
Dermal Thinning: Results in fragile skin more prone to injury.
Decreased Elasticity and Turgor: Contributes to sagging skin and reduced ability to snap back.
Reduced Hair and Nail Growth: Slower growth rate for both hair and nails as part of aging.

Exudate: Refers to any drainage from a wound.
Purulent: Indicates the presence of pus in the exudate.
Serous: Describes clear drainage, often seen in healing wounds.
Sanguineous: Refers to drainage that is bloody in nature.
Serosanguineous: A mixture of clear and bloody drainage, often observed during the healing process.

Description

This quiz covers key terms and concepts related to the anatomy and physiology of the integumentary system, including the structure and function of skin, hair, and nails. You'll learn about important terms like alopecia, erythema, and more as you explore the two main layers of the skin.