About This Chapter
How it works:
- Begin your assignment or other GED science work.
- Identify the circulatory, respiratory, digestive, excretory and musculoskeletal systems concepts that you're stuck on.
- Find fun videos on the topics you need to understand.
- Press play, watch and learn!
- Complete the quizzes to test your understanding.
- As needed, submit a question to one of our instructors for personalized support.
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This chapter of our GED science tutoring solution will benefit any student who is trying to learn the circulatory, respiratory, digestive, excretory and musculoskeletal systems and earn better grades. This resource can help students including those who:
- Struggle with understanding multicellular organisms, connective tissue, human vascular system, red blood cells, gas exchange or any other circulatory, respiratory, digestive, excretory and musculoskeletal systems topic
- Have limited time for studying
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- Prefer learning science visually
- Find themselves failing or close to failing their circulatory, respiratory, digestive, excretory and musculoskeletal systems unit
- Cope with ADD or ADHD
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- Don't have access to their science teacher outside of class
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- Engaging Tutors: We make learning the circulatory, respiratory, digestive, excretory and musculoskeletal systems simple and fun.
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- Learn at Your Pace: You can pause and rewatch lessons as often as you'd like, until you master the material.
- Describe the different types of connective tissue.
- Discuss the functions of the skeletal and muscular systems.
- Examine the different types of circulatory systems.
- Take a look at the human vascular system.
- Understand the functions of the heart, red blood cells and hemoglobin.
- Explain how gas is exchanged in the human respiratory system.
- Look at the anatomy and physiology of the upper and lower gastrointestinal tracts.
- Learn the functions of the excretory system.
1. Multicellular Organisms, Tissues and Epithelium
In this lesson on multicellular organisms, you'll take a look at what it actually means to be multicellular and how cells are organized into tissues, organs, and organ systems. This lesson also covers one of the four main tissue types: epithelial tissue.
2. Types of Connective Tissue
In this lesson, you'll learn about the various types of connective tissues in the body. These tissues include bone, fat, cartilage and blood. They form the framework of the body, support organs and much, much more!
3. Skeletal System and Muscular System
Do you know how many bones are in the human body? Check out this video lesson to uncover the answer, as well as understand the role and importance of the skeletal and muscular systems.
4. Circulatory System I: Types of Circulatory Systems
From cnidarians to humans, all animals need a circulatory system to absorb nutrients and get rid of waste. Find out why different kinds of animals have different systems, and see what a closed circulatory system and indoor plumbing have in common.
5. Circulatory System II: The Human Vascular System
In this lesson, learn all about the operation of the human vascular system. What are the different types of blood vessels? How does blood flow through the human body? How does the system adapt to your body changing?
6. Circulatory System III: The Heart
What purpose does the heart serve? And how do different types of hearts function? In this lesson, you'll learn about two, three and four-chambered hearts.
7. Circulatory System IV: Red Blood Cells
Why don't mature red blood cells have nuclei or mitochondria, and how do these guys squeeze through capillaries? While learning about the brief but glorious lives of red blood cells, you'll also see which characteristics help them transport oxygen and carbon dioxide to other cells.
8. Circulatory System V: Hemoglobin
Did you ever wonder how red blood cells can store enough oxygen to supply the entire human body? Join us in this lesson on hemoglobin to learn why red blood cells are so good at transporting oxygen and carbon dioxide. This lesson will make you see red (as well as blue and purple-maroon)!
9. Gas Exchange in the Human Respiratory System
Did you know that the average human lung has a respiratory surface area that is roughly the same size as half of a tennis court? Believe it or not, that's how much surface area an active, healthy human needs to ensure that the body gets plenty of oxygen.
10. Digestive System I: The Upper Gastrointestinal Tract
Did you know that there are digestive enzymes in your saliva? It's true. As soon as you put a piece of food in your mouth, the digestive process begins. Join us with this first of two lessons about the human digestive system, where we'll follow food through the upper gastrointestinal tract from the mouth through the stomach.
11. Digestive System II: The Lower Gastrointestinal Tract
The lower gastrointestinal tract is the part of the digestive system that is responsible for the last part of food digestion and the expulsion of waste from the body. In this lesson, we'll look at each part of the system and what functions each serves in the process of digestion.
12. Excretory System
Each year in the U.S., close to 400,000 people with kidney failure undergo dialysis treatment in order to remove waste, remove excess fluid and restore electrolyte balance. Kidneys, the workhorses of the excretory system, perform these same functions more effectively than any machine. In this lesson, we'll talk about how the excretory system removes toxic substances from the body.
13. Bursa: Definition & Anatomy
For this lesson, the definition of bursa will be provided. Also, the specifics of the anatomy of the bursa will be discussed. Examples will be provided where applicable, and a test of your knowledge will be provided.
14. Cardiac Afterload: Definition & Reducing Agents
In this lesson, you'll begin to understand cardiac afterload. A definition will be provided and afterload increases, and decreases will be discussed. Finally, medications that affect cardiac afterload will be discussed.
15. Cardiac Preload: Definition & Reduction
In this lesson, you'll be introduced to cardiac preload. We'll examine what happens when cardiac preload is increased or decreased and how various cardiac preload conditions can affect our health.
16. Clavicle: Definition & Fracture Treatment
In this lesson you will learn all about the clavicle bones and areas on the bone in the human body. You'll also explore the anatomy of this upper chest bone and what kinds of fractures that occur with the bone. Treatment for the fracture will be described. Afterwards, test your knowledge with a quiz.
17. Humerus: Definition, Anatomy & Fracture
In this lesson, you will learn about the humerus bones in the human body. You'll also explore the anatomy of this prominent arm bone and how it can be fractured.
18. Interstitial Fluid: Definition, Pressure & Composition
In this lesson, you will learn about the fluid compartments of the body, specifically the interstitial fluid compartment. We'll explain the composition and the pressures related to interstitial fluid using examples.
19. Liver: Definition, Functions & Structure
The liver is a vital organ that is responsible for many of the processes that keep us alive. This lesson will discuss the key functions of the liver, its location in the body, and the diseases that can affect it.
20. Reflex: Definition, Types & Examples
In this lesson, you will learn about reflexes in the human body. Different types of reflexes will be discussed and examples will be provided when appropriate. Finally you will be able to test your knowledge of the content by taking the quiz.
21. The Amygdala: Definition, Role & Function
The amygdala is a section of the brain that is responsible for detecting fear and preparing for emergency events. This lesson discusses the amygdala, its functions, and its role in our perception of fear and other emotions.
22. What Are Skin Cells? - Functions, Types & Facts
Your skin is a fascinating organ and more complicated than you may have realized. It is made up of different layers and several types of cells, each with an important function for keeping you safe and healthy.
23. What is Bone Growth? - Process, Factors, Causes & Disorders
Bones are an important part of the human body, and their development and growth is a carefully regulated process that depends on the interactions of various cells, hormones, and vitamins. In this lesson, we will learn more about how bones grow and the disorders than can affect bone growth.
24. What is Digestion? - Definition & Process
This lesson will define the process of digestion. All parts of the gastrointestinal system will be discussed. Examples will be given when possible and a test of your knowledge will be provided.
25. What Is Fascia in Anatomy? - Definition & Tears
You may not know it, but the inside of your body is wrapped in fascia. In this lesson, we'll examine what exactly fascia is and explore the ways in which it can be damaged.
26. What Is Pulse Pressure? - Definition, Variation & Normal Range
In this lesson, you will learn what pulse pressure is, how it is measured, and the ranges of normal levels. Also included will be examples of variations in pulse pressure and how it is related to health.
27. What is Sweat? - Definition & Function
Sweat is a fluid produced by the skin in order to regulate body temperature. It is vital for the maintenance of homeostasis and is part of the excretory function of the skin. This article discusses sweat, its components, and its functions.
28. Subcutaneous Tissue Layer: Definition & Injections
Learn all about the subcutaneous tissue layer and its purpose for being on the body. We will also review different injections that can be administered through the subcutaneous tissue layer and the best places for those injections.
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