Chapter 3 Test-the Cardiovascular SySTEM

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Chapter 3 Test-the Cardiovascular System - Quiz


Questions and Answers
  • 1. 

    The cardiovascular system is made up of_________,___________, and _______________.

    • A.

      Blood, blood vessels, heart

    • B.

      Heart, lungs, skin

    • C.

      Blood, heart, aorta

    Correct Answer
    A. Blood, blood vessels, heart
    Explanation
    The cardiovascular system is made up of blood, blood vessels, and the heart. Blood is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body. Blood vessels, such as arteries, veins, and capillaries, carry the blood to different parts of the body. The heart acts as a pump, continuously circulating the blood throughout the body, ensuring that all organs and tissues receive the necessary oxygen and nutrients.

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  • 2. 

    When the doctor takes you pulse, which blood vessel is he feeling?

    • A.

      Vein

    • B.

      Capillary

    • C.

      Artery

    Correct Answer
    C. Artery
    Explanation
    When the doctor takes your pulse, they are feeling the artery. Arteries are blood vessels that carry oxygenated blood away from the heart to the rest of the body. The pulse is the rhythmic expansion and contraction of the artery walls as the heart pumps blood through them. By feeling the pulse, the doctor can assess the rate, rhythm, and strength of your heartbeat, which can provide important information about your overall health and cardiovascular system.

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  • 3. 

    The heart is located near the center of your____________.

    • A.

      Brain

    • B.

      Stomach

    • C.

      Chest

    Correct Answer
    C. Chest
    Explanation
    The heart is located near the center of your chest. It is positioned slightly to the left side of the chest, behind the breastbone (sternum). The heart is a vital organ that pumps blood throughout the body, supplying oxygen and nutrients to the tissues and organs. Its location in the chest allows it to efficiently distribute blood to the rest of the body.

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  • 4. 

    What divides the left side of the heart from the right side?

    • A.

      Aorta

    • B.

      Capillary

    • C.

      Septum

    Correct Answer
    C. Septum
    Explanation
    The septum is a thick muscular wall that separates the left side of the heart from the right side. It prevents the mixing of oxygenated and deoxygenated blood by creating two separate chambers. The left side of the heart receives oxygenated blood from the lungs and pumps it to the rest of the body, while the right side receives deoxygenated blood from the body and pumps it to the lungs for oxygenation. The septum ensures that the oxygen-rich and oxygen-poor blood do not mix, allowing for efficient circulation.

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  • 5. 

    How many chambers does the heart have?

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    Correct Answer
    D. 4
    Explanation
    The heart has four chambers, which are the left atrium, right atrium, left ventricle, and right ventricle. These chambers work together to pump blood throughout the body. The atria receive blood from the body and lungs, while the ventricles pump blood out to the rest of the body. This four-chambered structure allows for efficient and coordinated blood circulation, ensuring that oxygenated blood is delivered to the tissues and deoxygenated blood is returned to the lungs.

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  • 6. 

    What is the smallest blood vessel?

    • A.

      Artery

    • B.

      Capillary

    • C.

      Vein

    Correct Answer
    B. Capillary
    Explanation
    Capillaries are the smallest blood vessels in the human body. They connect arteries and veins and are responsible for the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues. Capillaries have thin walls, allowing for efficient diffusion of substances. Their small size and extensive network enable them to reach every cell in the body, ensuring that all tissues receive the necessary oxygen and nutrients while removing waste products.

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  • 7. 

    All of the following are found inside of your blood except the follwing:

    • A.

      White blood cells

    • B.

      Red blood cells

    • C.

      Platelets

    • D.

      Lungs

    Correct Answer
    D. Lungs
    Explanation
    The question is asking for something that is not found inside of your blood. White blood cells, red blood cells, and platelets are all components of blood. However, lungs are not found inside of your blood. Lungs are organs in the respiratory system that help with the exchange of oxygen and carbon dioxide.

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  • 8. 

    Where is plasma found?

    • A.

      Lungs

    • B.

      Skin

    • C.

      Blood

    Correct Answer
    C. Blood
    Explanation
    Plasma is a component of blood, making the answer "blood" correct. Plasma is a yellowish fluid that carries various substances such as hormones, nutrients, and waste products throughout the body. It also plays a crucial role in maintaining blood pressure and regulating body temperature. While plasma is not found in the lungs or skin, it circulates within blood vessels throughout the body.

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  • 9. 

    Plasma is made up of about_____ water.

    • A.

      75%

    • B.

      85%

    • C.

      90%

    • D.

      100%

    Correct Answer
    C. 90%
    Explanation
    Plasma, the liquid component of blood, is primarily composed of water. It makes up about 90% of plasma's composition. This high percentage of water is essential for maintaining the fluidity and transport functions of plasma, allowing it to carry various nutrients, hormones, and waste products throughout the body.

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  • 10. 

    Red blood cells transport___________.

    • A.

      Carbon dioxide

    • B.

      Oxygen

    • C.

      Carbon monoxide

    Correct Answer
    B. Oxygen
    Explanation
    Red blood cells are responsible for transporting oxygen throughout the body. They contain a protein called hemoglobin, which binds to oxygen in the lungs and carries it to the body's tissues and organs. This oxygen is essential for cellular respiration, where it is used to produce energy. Carbon dioxide, on the other hand, is a waste product of cellular respiration and is transported by the red blood cells back to the lungs to be exhaled. Carbon monoxide, a toxic gas, can also bind to hemoglobin but with a much higher affinity than oxygen, leading to a decreased oxygen-carrying capacity of the blood.

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  • 11. 

    Which of the following could be compared to soldiers?  

    • A.

      Red blood cells

    • B.

      White blood cells

    • C.

      Platelets

    Correct Answer
    B. White blood cells
    Explanation
    White blood cells could be compared to soldiers because they play a crucial role in defending the body against foreign invaders, just like soldiers protect a country from enemies. White blood cells are part of the immune system and help to identify and destroy pathogens, viruses, and bacteria, thereby maintaining the body's overall health and well-being. They are constantly patrolling the bloodstream and tissues, ready to mount a defense when needed, similar to how soldiers are always prepared to protect their country.

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  • 12. 

    What is your heart made of?

    • A.

      Skin

    • B.

      Tissue

    • C.

      Muscle

    Correct Answer
    C. Muscle
    Explanation
    The heart is made of muscle tissue. This is because the heart is a muscular organ responsible for pumping blood throughout the body. The contraction and relaxation of the heart muscles allow it to pump blood and maintain circulation.

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  • 13. 

    Which blood cells helps to make blood clots, so that you will stop bleeding when you get a cut?

    • A.

      Red blood cells

    • B.

      White blood cells

    • C.

      Platelets

    • D.

      Plasma

    Correct Answer
    C. Platelets
    Explanation
    Platelets are the blood cells that help to make blood clots, which are essential for stopping bleeding when you get a cut. When a blood vessel is damaged, platelets rush to the site and form a plug to prevent further blood loss. They also release chemicals that attract more platelets and help in the formation of a stable clot. Without platelets, the blood would not be able to clot effectively, leading to excessive bleeding and potential complications.

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  • 14. 

    Which blood cell is the most abundant in your blood?

    • A.

      Red blood cells

    • B.

      White blood cells

    • C.

      Platelets

    • D.

      Plasma

    Correct Answer
    A. Red blood cells
    Explanation
    Red blood cells, also known as erythrocytes, are the most abundant blood cells in the body. They make up about 40-45% of the total blood volume. Red blood cells are responsible for carrying oxygen from the lungs to the body's tissues and removing carbon dioxide. Their high abundance is necessary to ensure an efficient oxygen supply to all parts of the body. White blood cells, platelets, and plasma are also important components of blood, but they are present in smaller quantities compared to red blood cells.

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  • 15. 

    Your heart is about the size of your _____________.

    • A.

      Arm

    • B.

      Brain

    • C.

      Fist

    • D.

      Leg

    Correct Answer
    C. Fist
    Explanation
    The correct answer is "fist" because the size of the heart is roughly equivalent to the size of a person's closed fist. This comparison is often used to help visualize and understand the size of the heart.

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  • Current Version
  • Mar 03, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 13, 2012
    Quiz Created by
    Richteach
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