Ch 14: Physiology I - The Circulatory, Respiratory, Digestive, Excretory, and Musculoskeletal Systems: Help and Review

About This Chapter

The Physiology I chapter of this College Biology Help and Review course is the simplest way to master the circulatory, respiratory, digestive, excretory, and musculoskeletal systems. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of physiology.

Who's it for?

Anyone who needs help learning or mastering college biology material will benefit from taking this course. There is no faster or easier way to learn college biology. Among those who would benefit are:

  • Students who have fallen behind in understanding the components and functions of the circulatory, respiratory, digestive, excretory, and musculoskeletal systems
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about physiology
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the Physiology I chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Physiology I chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any physiology question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

In this chapter, you'll find the answers to questions including:

  • What purposes do the epithelium and human tissues serve?
  • How do the human muscular and skeletal systems work?
  • What are the different types of circulatory systems?
  • What are the parts of the human vascular system?
  • How does gas exchange occur in the human respiratory system?
  • What are the parts of the upper and lower gastrointestinal tracts?
  • What are the parts of the human excretory system?

33 Lessons in Chapter 14: Physiology I - The Circulatory, Respiratory, Digestive, Excretory, and Musculoskeletal Systems: Help and Review
Test your knowledge with a 30-question chapter practice test
Multicellular Organisms, Tissues and Epithelium

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.

Types of Connective 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!

Skeletal System and Muscular System

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.

Circulatory System I: Types of Circulatory 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.

Circulatory System II: The Human Vascular System

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?

Circulatory System III: The Heart

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.

Circulatory System IV: Red Blood Cells

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.

Circulatory System V: Hemoglobin

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)!

Gas Exchange in the Human Respiratory System

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.

Digestive System I: The Upper Gastrointestinal Tract

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.

Digestive System II: The Lower Gastrointestinal Tract

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.

Excretory System

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.

What Is an Organ System? - Definition & Pictures

13. What Is an Organ System? - Definition & Pictures

In this lesson, you will learn what an organ system is, and you will review each organ system in the human body. This will aid in your study of human anatomy and physiology. At the end of the lesson, a quiz will test your knowledge.

Axons: Definition & Function

14. Axons: Definition & Function

The nervous system is designed to control almost every system in the body. It does so through the use of neurons, which communicate with cells and tissue in different systems. This article addresses a part of the neuron, called the axon, which is important in this cellular communication.

Constriction: Definition & Meaning

15. Constriction: Definition & Meaning

Constriction is a key regulatory process within the body that is important for proper functioning in many of our physiological systems. Learn more about the process of constriction and when it is utilized within the human body.

Maxillary Artery: Anatomy & Branches &

16. Maxillary Artery: Anatomy & Branches &

In this lesson, we will explore the maxillary artery and learn what it branches from, what its branches supply blood to and a handy little mnemonic for remembering all 17 branches.

Mouth Cancer: Causes, Symptoms & Treatment

17. Mouth Cancer: Causes, Symptoms & Treatment

Mouth cancer comes in many forms and can affect any part of the mouth. Read this lesson to learn about the different types, causes, symptoms, and treatment options for each!

Respiratory Pigments: Animals & Explanation

18. Respiratory Pigments: Animals & Explanation

A respiratory pigment is a molecule which increases the oxygen carrying capacity of blood. Learn more about the most common respiratory pigment in mammals, hemoglobin, as well as how it works. Also, discover the different types of respiratory pigments used by other organisms.

What Are Fibroblasts? - Definition & Explanation

19. What Are Fibroblasts? - Definition & Explanation

In this lesson, you will learn about fibroblasts. You will discover what substances they produce and why they are so important to every organ system in your body.

What are Veins? - Functions & Explanation

20. What are Veins? - Functions & Explanation

Veins are the blood vessels that carry deoxygenated blood from parts of our body back to the heart. Learn more about how they function and quiz yourself at the end.

What is Angiogenesis? - Definition & Factors

21. What is Angiogenesis? - Definition & Factors

Angiogenesis is the process of creating new blood vessels from preexisting blood vessels. The process is vital for the growth and development of an organism, as well as in wound repair. In addition, angiogenesis is a therapeutic target in many diseases. This lesson will focus on each of these roles.

What is Epidermis? - Definition, Function & Layers

22. What is Epidermis? - Definition, Function & Layers

In this lesson, learn what the epidermis is as well as how it functions. Discover more about it as well as explore the actual cells it is comprised of.

What is Physiology? - Definition & History

23. What is Physiology? - Definition & History

Have you ever wondered how physiology is different from medicine? Did you know that there are physiologists who study plants or bacteria or fungi? This lesson describes what physiology is and offers a brief history of how the field developed.

Osseous Tissue: Connective & Bone

24. Osseous Tissue: Connective & Bone

This lesson will discuss various types of connective tissue and bone found in animals. The structure of these connective tissues will also be reviewed.

What is Cardiac Ablation? - Definition, Procedure & Risks

25. What is Cardiac Ablation? - Definition, Procedure & Risks

Cardiac ablation is a procedure that can help people who have abnormal rhythms in their heart. Continue reading to find out what cardiac ablation is, how the procedure is done, and the risks involved.

Cardiac Ablation: Recovery & Therapy

26. Cardiac Ablation: Recovery & Therapy

A patient with an irregular heartbeat can sometimes be treated with a cardiac ablation. Learn about this procedure and the recovery time necessary after the therapy.

Radiofrequency Ablation: Procedure & Side Effects

27. Radiofrequency Ablation: Procedure & Side Effects

Radiofrequency ablation is a minimally invasive medical procedure used to treat chronic pain. In this lesson, we will explore the procedure and its possible side effects.

Acinetobacter Baumannii Infection: Causes & Symptoms

28. Acinetobacter Baumannii Infection: Causes & Symptoms

Acinetobacter baumannii is a strain of bacteria commonly found on the skin. This lesson will cover some of the causes and symptoms of an A. baumannii infection.

Preventing & Treating Acinetobacter Baumannii Infection

29. Preventing & Treating Acinetobacter Baumannii Infection

In this lesson, you will learn the basics of the bacteria Acinetobacter Baumannii. We'll cover the effects of infection by this antibiotic-resistant bacteria, as well as its prevention and treatment.

Actinomyces Israelii: Symptoms & Treatment

30. Actinomyces Israelii: Symptoms & Treatment

Actinomyces israelii is a bacteria found naturally in your body. It's usually harmless, but sometimes it can cause a condition called actinomycosis. Read this lesson to learn about the symptoms and treatment options for this condition.

Compare & Contrast Open & Closed Circulatory Systems

31. Compare & Contrast Open & Closed Circulatory Systems

In this lesson, you will explore open and closed circulatory systems. You will also learn what these two systems have in common and what makes them different.

Complete Digestive Tract: Definition & Advantages

32. Complete Digestive Tract: Definition & Advantages

This lesson defines complete digestive tracts and which organisms have them. We'll also go over some of the advantages of having a complete versus incomplete digestive tract.

Bone Health: Definition, Nutrition & Tips

33. Bone Health: Definition, Nutrition & Tips

Right now, thousands of people are suffering from weak bones and don't even know it! In this lesson, learn how to determine bone health and what factors place you at high risk. We'll also review lifestyle modifications that promote good bone health.

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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