respiratory system during exercise of differing intensities and during recovery.

Question 1

inspiration during exercise:

Answer 1

1. diaphragm contracts and the intercostal muscles contract more.
2. additional muscles (sternocleidomastoid, pectoralis minor and scalenes) contract.
3. ribs move up and out MORE THAN AT REST.
4. volume inside the lungs increases MORE THAN AT REST.
5. pressure inside the lungs decreases MORE THAN AT REST.
6. MORE air enters the lungs THAN AT REST

Question 2

expiration during exercise:

Answer 2

1. diaphragm relaxes and the external intercostals relax more.
2. additional muscles (internal intercostals and rectus abdominus) contract.
3. ribs move down and in MORE THAN AT REST.
4. volume inside the lungs decreases MORE THAN AT REST.
5. pressure inside the lungs increases MORE THAN AT REST.
6. MORE air leaves the lungs THAN AT REST.

Question 3

what is the definition of neural control?

Answer 3

how our brain controls our respiratory rate.