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Ch 47: Holt McDougal Modern Biology Chapter 48: Digestive and Excretory Systems

About This Chapter

The Digestive and Excretory Systems chapter of this Holt McDougal Modern Biology textbook companion course helps students learn the essential modern biology lessons of the digestive and excretory systems. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Digestive and Excretory Systems textbook chapter.

How it works:

  • Identify the lessons in the Holt McDougal Modern Biology Digestive and Excretory Systems chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the digestive and excretory system topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Functions of carbohydrates and proteins
  • Nutritional role of lipids
  • Functions and sources of minerals and vitamins
  • Importance of water as a nutrient
  • Anatomy and physiology of the mouth, throat and esophagus
  • Anatomy of the stomach
  • Functions of the small intestine
  • Enzymes produced by the pancreas
  • Roles of the gallbladder and liver in digestion
  • Anatomy and physiology of the large intestine
  • Gross anatomy of the urinary system
  • Major divisions and structures of the kidneys
  • Function of the renal tubule
  • Layers, structure and function of human skin

Holt McDougal Modern Biology is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

17 Lessons in Chapter 47: Holt McDougal Modern Biology Chapter 48: Digestive and Excretory Systems
Test your knowledge with a 30-question chapter practice test
The Importance of Carbohydrates: Functions & Impact of Deficiency

1. The Importance of Carbohydrates: Functions & Impact of Deficiency

Carbohydrates are an important energy source for your body and brain. Learn what carbohydrates are, explore how they function, and discover the impact of carbohydrate deficiency.

Lipids: Types & Nutritional Role

2. Lipids: Types & Nutritional Role

Lipids are another name for the fats contained in the human body. This lesson explores the major classifications of lipids--triglycerides, phospholipids, and steroids--and the role each plays in nutritional health.

Primary Functions of Protein in the Body

3. Primary Functions of Protein in the Body

Protein is an essential molecule made up of amino acids. Learn how proteins function by providing structure, regulating processes, transporting materials, helping with immunity, and providing energy to the body.

Minerals in Our Food: Functions in the Body & Food Sources

4. Minerals in Our Food: Functions in the Body & Food Sources

Minerals are inorganic compounds that are needed to regulate the body's overall health. Explore the different types and functions of trace minerals and macrominerals, and understand what sources these minerals come from.

Vitamins We Need: Their Importance & Sources

5. Vitamins We Need: Their Importance & Sources

The human body needs vitamins in order to survive and function. Discover the different kinds of vitamins, the different sources we can obtain them from, and the important role vitamins play in our bodies.

Water's Role as a Nutrient: Importance & Dietary Need

6. Water's Role as a Nutrient: Importance & Dietary Need

Water is an important nutrient that the human body needs a lot of as part of a healthy diet. Learn about why the body needs water, where water is found in the body, and how the body can lose water.

Anatomy and Physiology of the Mouth

7. Anatomy and Physiology of the Mouth

The mouth contains the salivary glands that aid in breaking down the food and it also leads to the alimentary canal or the digestive tract. Learn about the anatomy and physiology of the mouth and the alimentary canal and the process of digesting food.

Anatomy of the Throat and Esophagus

8. Anatomy of the Throat and Esophagus

After food is partially broken down by enzymes in the mouth, it moves through the throat, past the esophagus, and into the stomach for complete digestion. Learn about the anatomy of the throat and esophagus (pharynx, larynx, epiglottis, nasopharynx, oropharynx, laryngopharynx, and lower esophageal sphincter), deglutition, and the importance of peristalsis.

Anatomy and Physiology of the Stomach and Autonomic Nervous System Controls

9. Anatomy and Physiology of the Stomach and Autonomic Nervous System Controls

Digestion begins in the mouth but continues in the stomach. Explore the anatomy and physiology of the stomach, like the pyloric sphincter, rugae, mucosa, and gastric pits and glands, and learn how the automatic nervous system controls them.

What is the Small Intestine? - Anatomy and Functions

10. What is the Small Intestine? - Anatomy and Functions

The small intestine is the section of the digestive tract where most food digestion and nutrient absorption occurs. Learn about the anatomy of the small intestine (duodenum, jejunum, & ileum), the basic functions of each section, and the importance of Peyer's Patches in removing bacteria from the small intestine.

What Is the Pancreas? - Function, Enzymes & Role in Digestion

11. What Is the Pancreas? - Function, Enzymes & Role in Digestion

The pancreas is an important digestive organ that produces a variety of digestive enzymes to break down food in the small intestine. Learn about the function of the pancreas, pancreatic enzymes (trypsin, chymotrypsin, & carboxypeptidase), pancreatic amylase & lipase, and the role of the pancreas in digestion.

The Gallbladder & Liver: Function & Role in Digestion

12. The Gallbladder & Liver: Function & Role in Digestion

The liver and the gallbladder are internal organs that aid the digestive system in breaking down food and regulating digestive enzymes. Learn about the functions of the liver and the gallbladder and the different hormones and enzymes produced by each organ.

Anatomy and Physiology of the Large Intestine

13. Anatomy and Physiology of the Large Intestine

The final stages of digestion happen within the large intestine, which absorbs water and carries waste to the anal canal primarily. Learn about the anatomy and physiology of the large intestine and explore its many components, including the cecum, appendix, colon, haustra, rectum, and anal canal.

Gross Anatomy of the Urinary System

14. Gross Anatomy of the Urinary System

The urinary system is comprised of several organs that perform critical roles in the detoxification of the body and the excretion of toxins in the form of urine. Learn about the anatomy of the urinary system (liver, kidneys, nephrons, ureters, bladder, & urethra), the purpose of each organ, and how the urinary system functions to eliminate waste from the body.

The Kidney: Major Divisions & Structures

15. The Kidney: Major Divisions & Structures

The kidney is a complex organ that helps the human body function properly by removing urine and excess fluid, and also by regulating minerals and removing waste from the blood. Learn about the functions of the kidney's major divisions and structures including the cortex, medulla, renal pyramid, renal papilla, and renal pelvis.

The Renal Tubule: Definition, Function & Terms

16. The Renal Tubule: Definition, Function & Terms

The kidneys include renal tubules, which are essential structures that help the kidneys function properly. Learn the definition of the renal tubule and explore its functions, including the role of PTH in regulating calcium. Understand terms important to the renal tubule, including ultrafiltrate, proximal convoluted tubule, loop of Henle, distal convoluted tubule, connecting tubule, the collecting duct and its hormones, and distal nephron and its hormones.

Human Skin: Layers, Function & Structure

17. Human Skin: Layers, Function & Structure

The human skin has several layers and each one of them contains different components. Discover the function and structure of three main layers of your skin, including the epidermis, dermis, and subcutis, check the different cells and tissues of the skin layers, and see why sunbathing at the beach is risky.

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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