Welcome to the Circulatory System MCQs with Answers. In this post, we have shared Circulatory System Online Test for different competitive exams. Find practice Circulatory System Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Circulatory System.
| The circulatory system, also known as the cardiovascular system, is a complex network responsible for the transportation of blood, nutrients, oxygen, carbon dioxide, hormones, and other essential substances throughout the body. It plays a crucial role in maintaining homeostasis and supporting the body’s metabolic processes. The circulatory system consists of the heart, blood vessels (arteries, veins, and capillaries), and blood. The Heart: The heart is the central organ of the circulatory system, acting as a pump to circulate blood. It has four chambers: the right atrium, right ventricle, left atrium, and left ventricle. The right side of the heart pumps deoxygenated blood to the lungs for oxygenation (pulmonary circulation), while the left side pumps oxygenated blood to the rest of the body (systemic circulation). Arteries: These blood vessels carry oxygenated blood away from the heart to the tissues and organs. The largest artery is the aorta, which branches into smaller arteries that reach various parts of the body. Arteries have thick, elastic walls to withstand the high pressure of blood being pumped from the heart. Veins: Veins return deoxygenated blood from the body back to the heart. They have thinner walls compared to arteries and often contain valves to prevent the backflow of blood, ensuring it moves in the correct direction. The largest veins are the superior and inferior vena cava, which transport blood from the upper and lower parts of the body to the heart. Capillaries: These are the smallest blood vessels, forming an extensive network that connects arteries and veins. Capillaries have thin walls that allow for the exchange of oxygen, nutrients, carbon dioxide, and waste products between the blood and surrounding tissues. This exchange occurs through diffusion. Blood: Blood is a vital fluid composed of red blood cells, white blood cells, platelets, and plasma. Red blood cells transport oxygen and carbon dioxide, white blood cells are involved in immune responses, platelets help in blood clotting, and plasma serves as the medium for carrying nutrients, hormones, and waste products. |
Circulatory System Online Quiz
By presenting 3 options to choose from, Circulatory System Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Circulatory System Questions and Answers and click over the correct answer.
- Test Name: Circulatory System MCQ Quiz Practice
- Type: Quiz Test
- Total Questions: 40
- Total Marks: 40
- Time: 40 minutes
Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quiz, simply click on question and comment below that question, so that we can update the answer in the quiz section.
Download Certificate of Circulatory System Test
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Circulatory System Flashcards
Which part of the circulatory system carries oxygen-poor blood from the heart to the lungs?
Pulmonary arteries
What is the primary function of the lymphatic system in circulation?
Return interstitial fluid to the blood
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