Basic Math 
Pre Algebra
Algebra I 
Algebra I
Algebra II 
Geometry 
Trigonometry 
Precalculus 
Math Analysis 
AP Calculus AB 
AP Calculus BC
AP Statistics
Gen. Statistics 
Gen. Statistics
Probability 
College Calculus: Level I
College Calculus: Level II 
Multivariable Calculus 
Linear Algebra 
Differential Equations 
Physical Science (Middle School)
General Chemistry 
Gen. Chemistry
AP Chemistry 
Biochemistry 
Organic Chemistry 
Organic Chemistry Lab 
Physical Chemistry 
Physics – High School (Theory & Application) 
AP Physics 1 & 2 
AP Physics C: Mechanics 
AP Physics C: Electricity & Magnetism 
AP Physics B
AP Physics C: Mechanics
AP Physics C: Electricity Magnetism
Life Science (Middle School)
Regular Biology
Anatomy & Physiology 
General Biology 
AP Biology 
AP Environmental Science
Microbiology
Molecular Biology 
Intro to Psychology
AP Psychology
AP Microeconomics
AP Macroeconomics
AP US Government
AP US History
AP World History
HTML Training 
HTML 5
Intro to Ruby Programming 
Web Design & E-Commerce
Introduction to C++
Intermediate Level C++
CSS Intro
Java
AP CompSci: Intro to Java
JavaScript
Introduction to PHP 
Advanced PHP Training w/ mySQL 
C#
Visual Basic
WordPress
WordPress Blogging
XML Training
QuickBooks (How-To Guide) 
MATLAB
Adobe Dreamweaver CC
Adobe Dreamweaver CS6 
Adobe Photoshop CS6 
Photoshop Designs to Code
Edge Animate CC
jQuery Mobile
Adobe Illustrator CS6
Adobe Premiere Pro CS6
Adobe Premiere Elements 11
ColdFusion 9
ColdFusion 9: Application Framework
Fireworks CS6: Web Workflow
Adobe Photoshop Elements 11 
English Grammar
Advanced English Grammar
English Composition
Application Essays
AP English Language & Composition
AP English Literature & Composition
Shakespeare: Plays & Sonnets
Reading Comprehension
AP Spanish
AP Studio Art 2-D
Music Composition
Music Theory
Music History & Appreciation
SAT: Overview
SAT: Critical Reading
SAT: Mathematics
SAT: Writing
Standardized Math: GRE, ACT, PSATStart learning today, and be successful in your academic & professional career. Start Today!
Loading video...
Study Guides
Nonspecific Immune Defenses
Our bodies are constantly exposed to potentially harmful mircroorganisms. If we didn't have ways of protecting ourselves against these invaders, we could become sick or even die from the smallest infection.
Our immune system has both external and internal means of keeping foreign invaders from damaging our bodies.
In this Lesson, we'll explore our body's nonspecific immune defenses. These defenses work against all types of invaders, without targeting a specific type of organism.