Page 109 - Alaska A & P Primer

SECTION 19
THE CARDIOVASCULAR SYSTEM: THE HEART
STUDY QUESTIONS
1. Why is the pressure in the pulmonary circulation lower than in the systemic circulation?
2. Why is afterload important to cardiac function?
3. The force the heart must overcome to pump blood is known as ________.
4. In a healthy young adult, what happens to cardiac output when heart rate in- creases above 160 bpm?
5. Which portion of the ECG corresponds to repolarization of the atria?
6. The influx of which ion accounts for the plateau phase?
SECTION OBJECTIVES
1. Identify and describe the interior and exterior parts of the human heart
2. Describe the path of blood through the cardiac circuits
3. Describe the size, shape, and location of the heart
4. Compare cardiac muscle to skeletal and smooth muscle
5. Explain the cardiac conduction system
6. Describe the process and purpose of an electrocardiogram
7. Explain the cardiac cycle
8. Calculate cardiac output
9. Describe the effects of exercise on cardiac output and heart rate
10. Name the centers of the brain that control heart rate and describe their function
11. Identify other factors affecting heart rate
12. Describe fetal heart development
This content is available for free at https://cnx.org/content/col11496/1.7
State of Alaska EMS Education Primer - 2016
108