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Integumentary System
Quiz Date: 12/9
8
Science
7th Grade
12/01/2014

Additional Science Flashcards

 


 

Cards

Term
What is the largest organ in your body?
Definition
SKIN!
Term
What does the Integumentary System consist?
Definition

hair

skin

nails

sweat glands

Term
What is this system responsible for?
Definition
  • protecting the underlying tissue
  • regulating internal body temperature
  • collecting sensory information from the environment
  • producting some vitamins
  • retaining necessary fluids
  • eliminating some wastes
Term
What are the 3 main layers of your skin?
Definition

The Epidermis

 

The Dermis

 

The Subcutaneous tissue

Term
The Epidermis
Definition
  • Thin outer layer of skin
  • top layer consists of 25-30 layers of dead skin cells
  • contains Keratin - which makes your skin tough and waterproof
  • contains melanin- a pigment that gives skin its coloring
  • melanin cont: absorbs UV rays from the sun and acts as a natural sunscreen
  • Less Melanin= more likely to have skin cancer
Term
The Dermis
Definition
  • thick middle layer
  • composed of collogen and elastin: allows skin to strech
  • also contains: blood vessels, muscle fibers, sweat glands, hair follicles
Term
Subcutaneous layer
Definition
  • underneath the dermis
  • Functions as a shock absorber, insulator, and a connector (skin to underlying organs)
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