Life Science Ch 14 Quiz 1

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Life Science Ch 14 Quiz 1; Respiratory & Circulatory Systems


Questions and Answers
  • 1. 

    The heart's larger pumping chambers are called the...

    • A.

      Ventricles

    • B.

      Atria

    • C.

      Valves

    • D.

      Arteries

    Correct Answer
    A. Ventricles
    Explanation
    The heart's larger pumping chambers are called ventricles. The ventricles are responsible for pumping blood out of the heart and into the arteries. They have thicker walls compared to the atria, as they need to generate enough force to push blood throughout the body. The valves, on the other hand, are structures that ensure one-way flow of blood within the heart. Arteries are blood vessels that carry oxygenated blood away from the heart to the rest of the body.

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  • 2. 

    The alternating expansion and relaxation of the artery that you feel in your wrist is your...

    • A.

      Pulse

    • B.

      Coronary artery

    • C.

      Blood pressure

    • D.

      Plasma

    Correct Answer
    A. Pulse
    Explanation
    The alternating expansion and relaxation of the artery that you feel in your wrist is known as your pulse. This rhythmic throbbing is caused by the contraction of the heart, which pumps blood into the arteries. As the blood is pushed through the arteries, it creates a wave-like motion that can be felt in certain areas of the body, such as the wrist. Monitoring the pulse can provide important information about a person's heart rate and overall cardiovascular health.

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  • 3. 

    The exchange of gases between the blood and the air takes place in the...

    • A.

      Trachea

    • B.

      Diaphragm

    • C.

      Bronchi

    • D.

      Alveoli

    Correct Answer
    D. Alveoli
    Explanation
    The exchange of gases between the blood and the air takes place in the alveoli. Alveoli are tiny air sacs located at the end of the bronchioles in the lungs. They are surrounded by a network of capillaries where oxygen from the air diffuses into the bloodstream and carbon dioxide from the bloodstream diffuses into the alveoli to be exhaled. This process is essential for respiration and the transportation of oxygen to the body's tissues.

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  • 4. 

    Blood components that transport oxygen in the body are...

    • A.

      Platelets

    • B.

      Red blood cells

    • C.

      White blood cells

    • D.

      Plasmas

    Correct Answer
    B. Red blood cells
    Explanation
    Red blood cells are responsible for transporting oxygen in the body. They contain a protein called hemoglobin that binds to oxygen in the lungs and carries it to the tissues and organs. The shape of red blood cells, which is a biconcave disc, allows for a large surface area for oxygen exchange. This enables them to efficiently transport oxygen throughout the body. Platelets are responsible for blood clotting, white blood cells are involved in the immune response, and plasma is the liquid component of blood that carries nutrients and hormones.

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  • 5. 

    Which of the following diseases causes less oxygen to be taken into the body from the air?

    • A.

      Emphysema

    • B.

      Stroke

    • C.

      Hypertension

    • D.

      Atherosclerosis

    Correct Answer
    A. Emphysema
    Explanation
    Emphysema is a disease that affects the lungs, specifically the air sacs or alveoli. It is characterized by the destruction of these air sacs, leading to decreased lung function and reduced ability to take in oxygen from the air. As a result, less oxygen is transported into the bloodstream, leading to lower oxygen levels in the body. This condition is known as hypoxemia and can cause shortness of breath, fatigue, and other respiratory symptoms. Therefore, emphysema causes less oxygen to be taken into the body from the air.

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  • 6. 

    Blood pressure is exerted by the blood on the walls of blood vessels as a result of the force with which the ________________ contract in the heart

    Correct Answer
    ventricles
    ventricle
    Explanation
    Choose the most appropriate answer from your Ch. 14 vocabulary

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  • 7. 

    The protein ______________ in the red blood cells enables the blood to carry oxygen because it chemically binds to the oxygen molecules.

    Correct Answer
    hemoglobin
    Explanation
    Choose the most appropriate answer from your Ch. 14 vocabulary

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  • 8. 

    Air comes into the lungs as a result of the actions of the _____________ and chest muscles which make the chest cavity larger.

    Correct Answer
    diaphragm
    Explanation
    Choose the most appropriate answer from your Ch. 14 vocabulary

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  • 9. 

    Fluid that is carried by the lymphatic system is called _______________, which consists of water, dissolved minerals, and some white blood cells.

    Correct Answer
    Lymph
    Explanation
    Choose the most appropriate answer from your Ch. 14 vocabulary

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  • 10. 

    A _________    _____________ can result in the death of some heart muscle cells because the cells do not receive enough blood and oxygen.

    Correct Answer
    Heart attack
    Explanation
    Two words. Choose the most appropriate answer from your Ch. 14 vocabulary

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  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 21, 2010
    Quiz Created by
    Wthompsonctems
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