Ch 11: MCAS STE Biology: Digestive & Circulatory Systems

About This Chapter

Use the lessons in this chapter to study the digestive and circulatory systems. Also review the functions of the kidneys and liver so you can feel prepared for related questions on the MCAS STE Biology exam.

MCAS STE Biology: Digestive & Circulatory Systems - Chapter Summary

The lessons in this chapter will provide you with an in-depth review of the parts and functions of the digestive and circulatory systems. After exploring all of the lessons you will have studied:

  • Upper and lower gastrointestinal tracts
  • The different circulatory systems
  • Human vascular system
  • The heart
  • Red blood cells
  • Hemoglobin
  • Kidney parts and purpose
  • Liver components and function

The lessons are structured to provide you with several methods for effective learning. Videos are included with each lesson to help illustrate the material. Transcripts of the video are provided for text-based learning and ease of note-taking. At the end of each lesson you can take a self-assessment quiz to determine your knowledge and see how questions may appear on the exam.

MCAS STE Biology: Digestive & Circulatory Systems Chapter Objectives

The MCAS STE Biology exam is one of four standardized Science and Technology/Engineering tests administered to high school students in Massachusetts. This exam assesses students' level of proficiency in biology as determined by the Massachusetts Curriculum Framework. Questions on the exam cover five content areas. The material in this chapter prepares you for the anatomy and physiology portion of the test, which accounts for 15% of the total score.

The MCAS STE Biology exam is comprised of 40 multiple-choice questions and 5 open-ended responses. The open-ended responses could be related to any of the five content areas so you will want to study for all of them. You will need a score of 220 or higher on one of the four STE exams to qualify for graduation.

9 Lessons in Chapter 11: MCAS STE Biology: Digestive & Circulatory Systems
Test your knowledge with a 30-question chapter practice test
Digestive System I: The Upper Gastrointestinal Tract

1. 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

2. 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.

Circulatory System I: Types of Circulatory Systems

3. 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

4. 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

5. 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

6. 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

7. 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)!

Kidneys: Structure & Function

8. Kidneys: Structure & Function

Your kidneys don't get a lot of attention, but they are important to your health. Learn about your kidneys and the jobs they do, like filtering wastes out of your blood, balancing fluids, adjusting your blood pressure and helping to make blood cells.

Liver: Structure & Function

9. Liver: Structure & Function

Your liver is a big organ with big jobs. It sits on the right-hand side of your body and helps out with many different tasks that keep you healthy, such as cleaning your blood, storing energy, and making bile and cholesterol.

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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