Question 1: Which of the following is the main function of the circulatory system?

Answer: Transporting nutrients and oxygen

Question 2: The heart is divided into how many chambers?

Answer: Four

Question 3: True or False: Veins carry blood away from the heart.

Answer: False

Question 4: True or False: Arteries usually carry oxygen-rich blood.

Answer: True

Question 5: Briefly explain the role of red blood cells in the circulatory system.

Answer: Red blood cells transport oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Question 6: What is the function of the valves in the heart?

Answer: The valves prevent the backflow of blood, ensuring it flows in the correct direction through the heart's chambers.

Question 7: Describe the process of systemic circulation.

Answer: Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

Question 8: Calculate the cardiac output if the heart rate is 70 beats per minute and the stroke volume is 70 mL. Use the formula: Cardiac Output = Heart Rate x Stroke Volume.

Answer: 4900 mL/min

Question 9: Match the following terms to their definitions:

Answer: See full answer key

Question 10: Order the following steps in the blood circulation process starting from the right atrium:

Answer: See full answer key

Question 11: The ___ is responsible for pumping oxygenated blood into the systemic circulation.

Answer: left ventricle

Question 12: Discuss the importance of maintaining healthy blood pressure and the factors that can influence it.

Answer: Healthy blood pressure is crucial for ensuring that blood is efficiently circulated throughout the body, delivering oxygen and nutrients to tissues and organs. High blood pressure can lead to heart disease and stroke, while low blood pressure can cause dizziness and fainting. Factors influencing blood pressure include diet, exercise, stress, genetics, and weight.