I think the answer would be B.
Adults should<span> do at least 2 hours and 30 minutes </span>each week<span>of aerobic </span>physical activity<span> at a moderate level OR 1 hour and 15 minutes </span>each week<span> of aerobic </span>physical activity<span> at a vigorous level.</span>
An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers.
Alveoli is the smallest part of the respiratory system. The best description about it is “they are the smallest tubes in the respiratory system”.
EXPLANATION
Alveoli’s function is to exchange oxygen and carbon dioxide. Thus, it becomes an important part of the respiratory system. Alveoli’s shape is like tiny balloon-shaped. Its location is at the very end of the respiratory tree. It is arranged in clusters which are throughout the human’s lungs. Alveoli also can be said as the endpoint of the respiratory system. Without alveoli, a human cannot breathe normally.
Due to the important function of alveoli, here are some medical conditions that people have to be aware of:
• Emphysema
• Pneumonia
• Tuberculosis
• Bronchioloalveolar carcinoma
• Acute respiratory distress syndrome
• Respiratory distress syndrome
• Pulmonary edema
We also have to be aware of the effect of tobacco and smoking because these things can affect the function of alveoli. Tobacco and smoking cause the damage, right down to the molecular level. It will disrupt our body’s ability to repair itself. In a serious condition, it will lead to an infection or trauma. The effect of tobacco and smoking also cause a risk to human’s lungs. The damage of the alveoli will cause human’s lungs exposed to the toxic fumes.
LEARN MORE
If you’re interested in learning more about this topic, we recommend you to also take a look at the following questions:
1. Which sequence correctly shows the path of carbon dioxide during respiration? brainly.com/question/11954250
2. What is the correct order from the largest structure to smallest within the lungs? brainly.com/question/1621897
KEYWORDS: Alveoli, lungs
Subject: Health
Class: 10-12
Subchapter: Alveoli
