1. In which part of the respiratory system, gaseous exchange takes place? Show
(a) Alveoli (b) Pharynx (c) Larynx (d) Trachea Sol. (a) Alveoli. 2. ___________ is located between two pleural sacs and is the central compartment of the thoracic cavity? (a) Hilum (b) Pleura (c) Mediastinum (d) Thoracic cage Sol. (c) Mediastinum. 3. Which of the following statements is true about involuntary breathing? (a) It is controlled by the bronchioles (b) It is controlled by the pulmonary arterioles (c) It is controlled by the alveolar-capillary network (d) It is controlled by the neurons, located in the medulla and pons Sol. (d) It is controlled by the neurons, located in the medulla and pons. 4. Which of the following are parts of the human respiratory system? (a) Trachea (b) Diaphragm (c) The lungs (d) All of the above Sol. (d) All of the above. 5. Which of the following gas is released out during the process of respiration? (a) Oxygen (b) Hydrogen (c) Carbon dioxide (d) None of the above Sol. (c) Carbon dioxide. 6. The tiny air sacs present in human lungs is called_______. (a) Alveoli (b) Bronchus (c) Bronchioles (d) All of the above Sol. (a) Alveoli. 7. Which of the following functions by filtering and keeping the mucus and dirt away from our lungs? (a) Cilia (b) Bronchioles (c) Hairs in the lungs (d) All of the above Sol. (a) Cilia. 8. The total number of alveoli present in the human lungs is estimated to be around ______. (a) 1 billion (b) 800 million (c) 500 million (d) 1500 million Sol: (c) 500 million. 9. The exchange of gases between the external environment and the lungs______. (a) Respiration (b) External respiration (c) Cellular respiration (d) None of the above Sol: (b) External respiration 10. Which one of the following statements is false about the trachea? (a) Has C-shaped rings (b) It is covered by epiglottis (c) It splits into the right and left lungs (d) None of the above Sol: (b) It is covered by epiglottis 11. The maximum volume of air contained in the lung by a full forced inhalation is called _________. (a) Tidal volume (b) Vital capacity (c) Ventilation rate (d) Total lung capacity Sol: (d) Total lung capacity. 12. Which one of the following is correct regarding larynx? (a) It houses the vocal cords (b) It prevents the invading pathogens into the trachea (c) It is an organ made of cartilage and connects the pharynx to the trachea (d) All of the above. Sol: (d) All of the above. 13. Which of the following is the function of the trachea? (a) Gaseous Exchange (b) Filters the air we breathe (c) Exhales the air from the body (d) All of the above Sol: (b) Filters the air we breathe. 14. Which of these statements is true about internal respiration? (a) Production of ATP (b) Exchange of gases between the bloodstream and tissue cells (c) Exchange of gases between alveoli and the bloodstream (d) Breathing between the atmosphere and the alveoli Sol: (b) Exchange of gases between the bloodstream and tissue cells. 15. Which of the following organs functions as an air conditioner? (a) Larynx (b) Pharynx (c) Nasal chambers (d) All of the above Sol: (c) Nasal chambers. 16. The normal breathing process is controlled by ____________. (a) Lungs (b) Ventral respiratory group (c) Dorsal respiratory group (d) Both (b) and (c) Sol: (d) Both (b) and (c). 17. In Aves, the exchange of gases occurs within the __________. (a) Lungs (b) Air sacs (c) Air sacs and Lungs (d) None of the above Sol: (a) Lungs. 18. Which of the following statements is true about the entry of air into the lungs? (a) Air enters the body and travels to the lungs through the mouth and the nose (b) Air enters the body and travels to the lungs through the oesophagus and gullet (c) Air enters the body and travels to the lungs through the windpipe and the pores (d) Air enters the body and travels to the lungs through the nose and the nervous system. Sol: (a) Air enters the body and travels to the lungs through the mouth and the nose. 19. The windpipe is also called the ________. (a) Larynx (b) Lungs (c) Trachea (d) Oesophagus Sol: (c) Trachea. 20. In Earthworms, the process of respiration is through ________. (a) Skin (b) Head (c) Lungs (d) Pores on its anterior end Sol: (a) Skin. Stay tuned with BYJU’S Biology for more MCQs on Respiratory system and other Biology related topics. Which of the following is true of how neurons change in the first years of life?Which of the following statements is true of how neurons change in the first years of life? The synaptic connections that are used become strengthened and survive, while the unused ones are replaced by other pathways or disappear.
What are two significant ways that neurons change during the first years of life?Neurons grow longer dendrites and axons, which allow them to make more connections, or synapses, with other cells. The number and density of synapses increase rapidly during the first years of life. A 2-year-old's brain is about 20% smaller than an adult brain but has 50% more synapses.
What are the two significant ways that neurons change during the first years of life multiple select question?Which of the following are the two significant ways that neurons change during the first years of life? Myelination occurs rapidly. Specialization occurs within various abilities.
Which of the following is true of brain growth in early childhood quizlet?Which of the following is true of brain development in early childhood? The brain increases in size due to the continuing myelination of nerve fibers.
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Which of the following statements is true regarding how neurons change in the first years of life quizlet?
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