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Ch 18: Human Digestion, Respiration, Circulation & Excretion Systems

About This Chapter

How much do you know about many of the human body's systems? This chapter allows you to review the parts and functions of the digestion, respiration, circulation and excretion systems, which is helpful if you are preparing for an anatomy test, enhancing classroom studies or simply satisfying your own curiosity.

Human Digestion, Respiration, Circulation & Excretion Systems - Chapter Summary

Learning about the systems of the human body can sometimes seem daunting, but these brief video lessons make it easy to reinforce what you might already know or learn new facts about various systems, including digestion, respiration and circulation. You will go over functions, terminology and diseases and conditions relating to each system. When you have completed this chapter, you should have the ability to:

  • Define the digestive process and relate terms about vomiting and indigestion
  • Explain the effects of too much or too little protein in a diet
  • Compare the human respiratory system to that of birds, amphibians and other mammals
  • Detail the gas transport function of the circulatory system
  • Identify terms and causes of asthma, COPD and restrictive lung disease
  • Name the parts and functions of human circulatory and excretory systems
  • List the phases of the heartbeat or cardiac cycle
  • Discuss types of heart conditions and diseases
  • Relate information about the regulation of blood pressure
  • Describe causes and effects of kidney disease

Each lesson is taught by professionals with backgrounds in medicine, anatomy and physiology education. They present the material in simple terms and use examples and illustrations. Measure the depth of your knowledge with self-assessment quizzes, use your Dashboard to keep track of which lessons you have completed and which you need to review and use an online form to contact instructors with lesson-specific questions.

13 Lessons in Chapter 18: Human Digestion, Respiration, Circulation & Excretion Systems
Test your knowledge with a 30-question chapter practice test
What is Digestion? - Definition & Process

1. 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 you'll have an opportunity to test your knowledge.

Terminology of Indigestion and Vomiting

2. Terminology of Indigestion and Vomiting

Have you ever been sick or just had too much to drink or eat? How did you feel? Maybe it made you vomit or belch. This lesson defines the terms related to all of this unpleasant feeling.

Health Effects Associated with Proteins

3. Health Effects Associated with Proteins

If a diet is deficient in protein, it can lead to a type of protein-energy malnutrition (PEM), such as kwashiorkor or marasmus. If a diet is too high in protein, it can lead to dehydration or increase the risk of heart disease or cancer. Learn about all of this and more in this lesson.

Amphibian, Bird & Mammal Respiratory Systems

4. Amphibian, Bird & Mammal Respiratory Systems

While something as basic as breathing may sound universal, the fact is that amphibians, birds, and mammals all do it differently. In fact, even humans can't always control their breathing.

Gas Transport: Oxygen and Hemoglobin

5. Gas Transport: Oxygen and Hemoglobin

Did you know that almost all of the oxygen transported in our blood is bound to hemoglobin? Hemoglobin is loaded with oxygen in the lungs and unloaded of oxygen in the metabolizing tissues. This lesson will describe how oxygen is transported in our blood.

Terminology of COPD & Asthma

6. Terminology of COPD & Asthma

This lesson will define two famous respiratory disorders: COPD (encompassing chronic bronchitis and emphysema) and asthma (including wheezing and bronchospasms).

Intrinsic Causes of Restrictive Lung Disease

7. Intrinsic Causes of Restrictive Lung Disease

What does popcorn have to do with lung disease? Well, this lesson will help you find out as we venture into the world of the intrinsic causes of restrictive lung disease.

The Human Circulatory System: Parts and Functions

8. The Human Circulatory System: Parts and Functions

In this lesson, you will take a ride on the transportation system of the body called the circulatory system and its two parts: the pulmonary circuit and the systemic circuit. Take a look inside and see how every inch of your body receives the oxygen and nutrients it needs.

The Cardiac Cycle: Phases, Explanation & Terms

9. The Cardiac Cycle: Phases, Explanation & Terms

In this lesson, you will learn what happens during each heartbeat, or cardiac cycle. You will also learn that the heartbeat involves periods of relaxation and contraction, known as diastole and systole, respectively.

Types of Heart Conditions and Diseases

10. Types of Heart Conditions and Diseases

Your heart muscle receives a rich blood supply from the coronary arteries. If the coronary arteries become blocked, it can result in coronary heart disease, angina, heart attack or congestive heart failure. Learn how these conditions get started.

Excretory System

11. 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.

Renin Angiotensin Aldosterone System (RAAS): Pathway, Functions & Terms

12. Renin Angiotensin Aldosterone System (RAAS): Pathway, Functions & Terms

The renin-angiotensin-aldosterone system is one of the most complex and important systems in controlling the blood pressure in your body. As we go over this system, you'll also learn about the many hormones involved in the control of your body's glomerular filtration rate and blood pressure.

Pathologies of the Kidneys

13. Pathologies of the Kidneys

We will look at the most common conditions that affect the kidneys and their causes. The diseases that infect the kidneys will also be covered. The lesson will go over the signs and symptoms associated with each pathology.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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