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During exhalation, the ribs

During exhalation, the ribs Correct Answer move downwards

The correct answer is move downwards.

Key Points

  • Exhalation is the act of exhaling air taken in and is passive.
  • The diaphragm relaxes, moving upwards into the chest cavity.
  • During exhalation, the diaphragm moves up and ribs move downwards and inwards, decreasing the space in the chest cavity, this increases the air pressure inside the lungs and forces the air out of the lungs.
  • The intercostal muscles between the ribs relax, causing the area of the chest cavity to reduce.
  • Eventually, the area in the chest reduces and carbon dioxide-rich air is expelled out of the lungs and windpipe, ultimately out of the nose

Related Questions

Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R): Assertion (A): During exhalation, ribs move out. Reason (R): During exhalation, the intercostal muscles relax so the ribs move inwards and downwards. Select the correct answer using the codes given below.
Consider the following statements about Human respiratory system During  Inhalation ribs move outwards and upwards. During exhalation the ribs move downwards. Exhalation is an active process. Inspiration  is a passive process. Which of the statements given above is/are correct?
Which of the following statement(s) is/are true? I. During inhalation ribs move out II. During exhalation ribs move in
The 10th pair of ribs is known as floating ribs. True or false?
In ribbed flooring, lateral ribs having the same width as that of longitudinal ribs are provided if the span exceeds ________
What is the total volume of air accommodated in the lungs after forced exhalation called?
After a forceful exhalation, a person inhales some volume of air by forceful inhalation. What is this amount of air taken in called?
Which of the following has developed an active respirator mask that has an attached exhalation valve and filters against suspended-particles for comfortable and hygienic breathing?
A pipe, working at full speed, can fill an empty cistern in 1 hour. However, during the first hour it worked at one-twenty-fourth of its capacity, during the second hour at one-twelfth of its capacity, during the third hour at one-eighth of its usual capacity, during the fourth hours at one-fourth of its usual capacity and during the fifth hour it was only one-half as efficient as it was supposed to be. A second pipe also displayed similar performance, but if it worked at full speed would have filled the empty cistern in 2 hours. Together with a drain pipe that drained water out of the tank a constant rate, the empty cistern could be filled in 5 hours, all the three pipe working concurrently. How many hours will it take the drain pipe to empty the filled cistern if no other pipe was functioning during the time?
The given bar graph represents data of the production of paper (in ten lakh tonnes) by three different companies X, Y and Z during the years 2008 to 2012. The x-axis shows the 'years' and the y-axis represents the 'production of paper (ten lakh tonnes)'. (Note: The data shown is only for mathematical exercise. They do not represent actual figures.)  The total production of Company Y during 2008 and 2009 and Company X for 2011 and 2012 taken together is p% (p is correct to the nearest integer) more than the total production of Company Z during 2010, 2011 and 2012. The total production of Company Z during 2008 and 2009 taken together is q% (q is correct to the nearest integer) less than the total production of Company X during 2008, 2009 and 2012 and Company Y during 2010 and 2011 all together.  What is the positive difference between p and q ?