Gr 9 NATURAL SCIENCES: CH 1.4 Circulation and respiration

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the primary function of the heart in the circulatory system?

  • To remove carbon dioxide and waste products
  • To facilitate the exchange of oxygen and nutrients between blood and body cells
  • To supply cells with oxygen and nutrients
  • To pump blood throughout the body (correct)

Which chamber of the heart receives oxygen-rich blood from the lungs?

  • Right atrium
  • Left ventricle
  • Left atrium (correct)
  • Right ventricle

What is the main artery that distributes oxygenated blood to the rest of the body?

  • Pulmonary artery
  • Capillary
  • Pulmonary vein
  • Aorta (correct)

What is the primary function of arteries in the circulatory system?

<p>To transport blood away from the heart (A)</p> Signup and view all the answers

What is unique about the pulmonary arteries?

<p>They carry deoxygenated blood (A)</p> Signup and view all the answers

What is the primary function of capillaries in the circulatory system?

<p>To facilitate the exchange of oxygen, nutrients, and waste products between blood and body cells (B)</p> Signup and view all the answers

What is a characteristic of veins in the circulatory system?

<p>They carry deoxygenated blood, except for the pulmonary veins (C)</p> Signup and view all the answers

Why do arteries have strong, muscular walls?

<p>To withstand high blood pressure (A)</p> Signup and view all the answers

What is the pathway of oxygenated blood from the lungs to the heart?

<p>Pulmonary veins to left atrium to left ventricle (D)</p> Signup and view all the answers

What is the purpose of valves in veins?

<p>To prevent backflow (C)</p> Signup and view all the answers

Where does cellular respiration occur in cells?

<p>In the mitochondria (D)</p> Signup and view all the answers

What is the by-product of cellular respiration?

<p>Carbon dioxide (C)</p> Signup and view all the answers

What is the function of the right atrium in the heart?

<p>Receiving deoxygenated blood from the body (C)</p> Signup and view all the answers

What is the purpose of the pulmonary arteries?

<p>Carrying deoxygenated blood to the lungs (D)</p> Signup and view all the answers

What is an indicator of a person's cardiovascular fitness?

<p>Lower resting heart rate (A)</p> Signup and view all the answers

What is the main function of the circulatory system?

<p>To supply oxygen and nutrients to cells (A)</p> Signup and view all the answers

What is the primary function of the mitochondria in cellular respiration?

<p>To release energy (B)</p> Signup and view all the answers

What is the result of efficient circulation and respiration?

<p>Homeostasis (C)</p> Signup and view all the answers

What is the role of the veins in the circulatory system?

<p>To return deoxygenated blood to the heart (B)</p> Signup and view all the answers

What is the primary function of the lungs in the respiratory system?

<p>To facilitate gaseous exchange (B)</p> Signup and view all the answers

What happens to carbon dioxide produced during cellular respiration?

<p>It diffuses out of cells into the blood in capillaries. (D)</p> Signup and view all the answers

What is the result of gaseous exchange in the lungs?

<p>Deoxygenated blood becomes oxygen-rich. (B)</p> Signup and view all the answers

What is the significance of a lower resting heart rate?

<p>It indicates better cardiovascular fitness. (B)</p> Signup and view all the answers

What is the main function of the circulatory and respiratory systems?

<p>To maintain homeostasis and overall health. (C)</p> Signup and view all the answers

What is the pathway of deoxygenated blood returning to the heart?

<p>Veins to right atrium to right ventricle. (B)</p> Signup and view all the answers

What is the purpose of the right ventricle in the heart?

<p>To pump deoxygenated blood to the lungs. (D)</p> Signup and view all the answers

What is the role of mitochondria in cellular respiration?

<p>To break down glucose and other nutrients. (A)</p> Signup and view all the answers

What happens to oxygen-rich blood after it leaves the lungs?

<p>It goes to the left atrium and then the left ventricle. (C)</p> Signup and view all the answers

What is the significance of efficient circulation and respiration?

<p>It is necessary for maintaining homeostasis and overall health. (B)</p> Signup and view all the answers

What is the outcome of oxygen combining with glucose in cellular respiration?

<p>Energy is released, and carbon dioxide is produced. (C)</p> Signup and view all the answers

What is the primary purpose of blood circulation in the body?

<p>To support cellular respiration by supplying cells with oxygen and nutrients (D)</p> Signup and view all the answers

Which of the following statements about the left ventricle is true?

<p>It pumps oxygenated blood into the aorta (D)</p> Signup and view all the answers

What is the primary function of the pulmonary veins?

<p>To transport oxygenated blood from the lungs to the heart (D)</p> Signup and view all the answers

What is the characteristic of arteries that allows them to withstand high pressure?

<p>Strong and muscular walls (A)</p> Signup and view all the answers

Which of the following is a characteristic of capillaries?

<p>Extremely thin and narrow, forming a network around body cells (A)</p> Signup and view all the answers

What is the primary function of the circulatory system?

<p>To support cellular respiration by supplying cells with oxygen and nutrients (C)</p> Signup and view all the answers

What is the difference between the pulmonary veins and other veins in the circulatory system?

<p>Pulmonary veins carry oxygenated blood, while other veins carry deoxygenated blood (C)</p> Signup and view all the answers

What is the result of the heart pumping blood throughout the body?

<p>The distribution of oxygenated blood to the rest of the body (A)</p> Signup and view all the answers

What is the purpose of the network of capillaries around body cells?

<p>To facilitate the exchange of oxygen and nutrients between blood and body cells (C)</p> Signup and view all the answers

What is the characteristic of veins that prevents backflow?

<p>Valves (D)</p> Signup and view all the answers

What is the primary site where energy is generated for cellular functions?

<p>Mitochondria (D)</p> Signup and view all the answers

What is the fate of carbon dioxide produced during cellular respiration?

<p>It is released into the bloodstream (D)</p> Signup and view all the answers

What is the significance of a lower resting heart rate?

<p>It indicates better cardiovascular fitness (C)</p> Signup and view all the answers

What is the primary function of the circulatory and respiratory systems together?

<p>To maintain homeostasis and overall health (C)</p> Signup and view all the answers

What is the pathway of deoxygenated blood returning to the heart?

<p>Veins to right atrium (A)</p> Signup and view all the answers

What is the outcome of energy release during cellular respiration?

<p>Generation of ATP (B)</p> Signup and view all the answers

What is the role of the right ventricle in the heart?

<p>To pump deoxygenated blood to the lungs (D)</p> Signup and view all the answers

What is the significance of efficient circulation and respiration?

<p>It maintains homeostasis and overall health (C)</p> Signup and view all the answers

What is the outcome of gaseous exchange in the lungs?

<p>Oxygen is added to the blood and carbon dioxide is removed (B)</p> Signup and view all the answers

What is the result of oxygen combining with glucose in cellular respiration?

<p>Production of ATP and carbon dioxide (B)</p> Signup and view all the answers

What is the primary reason why blood circulation is crucial for supporting cellular respiration?

<p>To supply cells with oxygen and nutrients (D)</p> Signup and view all the answers

Which of the following statements about the left atrium is true?

<p>It receives oxygen-rich blood from the lungs and pumps it into the left ventricle (D)</p> Signup and view all the answers

What is the primary function of the network of capillaries around body cells?

<p>To facilitate the exchange of oxygen, nutrients, and waste products between blood and body cells (C)</p> Signup and view all the answers

Which of the following is a characteristic of arteries, except for the pulmonary arteries?

<p>They carry oxygenated blood under high pressure (A)</p> Signup and view all the answers

What is the primary function of the veins in the circulatory system?

<p>To transport blood back to the heart (B)</p> Signup and view all the answers

What is the significance of the valves in veins?

<p>To prevent backflow (B)</p> Signup and view all the answers

Which of the following is a characteristic of the left ventricle?

<p>It is a powerful chamber that pumps blood into the aorta (A)</p> Signup and view all the answers

What is the primary function of the heart in the circulatory system?

<p>To pump blood throughout the body (A)</p> Signup and view all the answers

What is the characteristic of the pulmonary veins that distinguishes them from other veins?

<p>They carry oxygenated blood (A)</p> Signup and view all the answers

What is the result of the heart pumping blood throughout the body?

<p>The supply of oxygen and nutrients to cells and the removal of carbon dioxide and waste products (B)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser