Grade 12 Biology: The Circulatory System
This worksheet covers key concepts of the human circulatory system, including heart anatomy, blood vessels, blood composition, and common circulatory diseases, suitable for Grade 12 Biology students.
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Grade 12 Biology: The Circulatory System
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Read each question carefully and provide accurate answers. For multiple-choice questions, circle the best option. For fill-in-the-blanks, complete the sentence with the correct term. For short-answer questions, use the provided lines to write your response.
1. Which component of blood is primarily responsible for oxygen transport?
Platelets
White blood cells
Red blood cells
Plasma
2. Which type of blood vessel carries oxygenated blood away from the heart to the rest of the body?
Veins
Arteries
Capillaries
Venules
3. The human heart has chambers: two atria and two ventricles.
4. The largest artery in the human body is the .
5. are responsible for initiating blood clotting.
6. Briefly describe the function of the pulmonary circulation.
7. The left ventricle pumps deoxygenated blood to the lungs.
True
False
8. Red blood cells contain hemoglobin, which binds to oxygen.
True
False
9. Label the following parts of the human heart:
A:
B:
C:
D:
Match each term on the left with its correct definition on the right.
10. Pericardium
a. The fluid component of blood
11. Plasma
b. Protective sac enclosing the heart
12. Systole
c. Contraction phase of the heart
13. Explain the process of gas exchange that occurs in the capillaries of the systemic circulation.