Mechanism of Breathing Inspiration and Expiration
Mechanism of Breathing Inspiration and Expiration
Mechanism of Breathing: Breathing is a physical process that involves intercostal muscles which lies between the ribs and the diaphragm and helps in breathing.
Inhaling: During inhaling, the intercostals muscles contract, the ribs are pushed upward and outward and the diaphragm contracts and moves downward. This upward and outward movement of the ribs and the descending movement of the diaphragm add to the space in the chest cavity. This increases the volume of the air-tight chest cavity and creates pressure inside the lungs. Air rushes from outside through the trachea to the air sacs and alveoli.
Exhaling: During exhaling, the intercostals muscles relax and simultaneously two movements takes place, i.e., the ribs move downward and inward, the diaphragm relaxes and moves upward to take up its original position. The downward and inner movement of the diaphragm reduce the space in the chest cavity. The capacity of the chest becomes smaller and the air rushes out of the lungs. The lungs get vacant and then contracts. This happens because the exhaled air contains carbon dioxide and carbon dioxide turns lime water milky. Hence, this activity shows that we exhale carbon dioxide during breathing.
Take one mirror and exhale air from your mouth on a mirror. We see some moisture on the mirror. This shows that the exhaled air contains water vapours which condense on the mirror to form tiny water droplets
Expulsion of the air from the lungs is called ________________ . | |||
| Right Option : C | |||
| View Explanation | |||
During exhalation ,size of chest cavity _________________ | |||
| Right Option : B | |||
| View Explanation | |||
Exhaling is the downward and inner movement of the diaphragm reduce the space in the chest cavity. The capacity of the chest becomes smaller and the air rushes out of the ______________ . | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
