Integ. System Study Guide

Question 1

What are the 3 layers of skin

Answer 1

Epidermis, Dermis, and Hypodermis (Subcutaneous Layer)

Question 2

Function of Epidermis

Answer 2

The epidermis is the outer skin layer that protects against environmental damage, regulates water loss, and contains sensory receptors. It produces melanin for skin color and continuously renews itself.

Question 3

Function of Dermis

Answer 3

The dermis is the layer beneath the epidermis that provides strength and elasticity, containing connective tissue, blood vessels, nerves, and skin appendages. It supports the epidermis and aids in sensation and thermoregulation.

Question 4

Function of the Subcutaneous Layer (Hypodermis)

Answer 4

The hypodermis, or subcutaneous layer, lies beneath the dermis and provides insulation, energy storage, and cushioning for the body.

Question 5

What is the Integumentary System?

Answer 5

The integumentary system includes the skin, hair, nails, and glands, providing protection, temperature regulation, sensation, and vitamin D synthesis.

Question 6

How is the Epidermis formed?

Answer 6

The epidermis forms through keratinization, where new cells in the stratum basale divide, mature, and move up, accumulating keratin before dying and shedding from the surface.

Question 7

What are the 4 different types of Membrane?

Answer 7

• Serous Membrane (Thorax)
• Mucosol Membrane (Nasal)
• Synovial Membrane (Lining of Knee Joint)
• Cutaneous Membrane (Skin)

Question 8

How are all the Body Systems related to the Integumentary System?

Answer 8

All body systems are interconnected with the integumentary system in several ways:
- Protection
- Temperature Regulation
- Sensation
- Metabolism
- Immune Response
- Fluid Balance

Question 9

Structure of Integumentary System:

Answer 9

• Largest organ of the body
• weighs 14lbs
• Made up of 4 types of membranes
• Loose connective tissue binds the membranes to the body & fills in empty spaces (collagen, blood, vessels, elastic fibers)