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L18 : Respiration in human beings - Life Processes, Science, Class 10 Video Lecture

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FAQs on L18 : Respiration in human beings - Life Processes, Science, Class 10 Video Lecture

1. What is respiration in human beings?
Ans. Respiration in human beings is the process through which oxygen is taken in and carbon dioxide is expelled from the body. It involves the exchange of gases between the body and the environment, ensuring the supply of oxygen to the cells and the removal of carbon dioxide produced during cellular respiration.
2. How does respiration occur in human beings?
Ans. Respiration in human beings occurs through a series of steps. It begins with the inhalation of air through the nose or mouth, which travels down the windpipe and enters the lungs. In the lungs, oxygen from the inhaled air is absorbed into the bloodstream and transported to the body cells. At the same time, carbon dioxide produced as a waste product by the cells is carried back to the lungs through the bloodstream and expelled from the body during exhalation.
3. What is the role of the respiratory system in human beings?
Ans. The respiratory system in human beings plays a vital role in respiration. It consists of organs such as the nose, mouth, windpipe, lungs, and diaphragm. The main function of the respiratory system is to facilitate the exchange of gases between the body and the environment. It ensures the supply of oxygen to the cells for their metabolic processes and removes carbon dioxide, a waste product of cellular respiration. Additionally, the respiratory system helps in regulating the pH balance of the body and is involved in the production of sound.
4. How does respiration in human beings differ from respiration in plants?
Ans. Respiration in human beings and plants differ in several aspects. In human beings, respiration occurs through the respiratory system, primarily in the lungs, while in plants, it occurs in the cells throughout the plant body. Human beings take in oxygen and release carbon dioxide, while plants take in carbon dioxide and release oxygen during respiration. Additionally, human beings rely on a specialized respiratory system, while plants utilize small openings called stomata for gas exchange. The overall process of respiration in both humans and plants involves the breakdown of glucose to release energy.
5. What are the effects of respiratory disorders on human beings?
Ans. Respiratory disorders can have significant effects on human beings. Conditions such as asthma, chronic obstructive pulmonary disease (COPD), pneumonia, and lung cancer can lead to difficulty in breathing, reduced lung function, and decreased overall respiratory efficiency. These disorders can cause symptoms such as coughing, wheezing, shortness of breath, chest pain, and fatigue. They can significantly impact an individual's quality of life and may require medical intervention, lifestyle changes, and medication for management and treatment.
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