Respuesta :
Answer:
B. You need to work harder to inhale, expanding your thoracic size beyond what is normal
Explanation:
To breathe, we need a difference between the atmospherical pressure and the intrapulmonary pressure. The first one is the pressure that the external air does to enter our lungs when we inhale, it has to be bigger than the intrapulmonary pressure, which is the pressure that is applied to our lungs by our diaphragm when this contracts to expel the air that is in our lungs.
As we ascend in a mountain, the atmospherical pressure is lower, so it is harder for the air to go into our lungs. As a result, we need to expand our thoracic size beyond normal to force the air into our lungs.
The study of a living being is called biology.
The correct answer is B.
The height of Mount Kilimanjaro is 19000ft from sea level. The pressure is very high as compared to the plain.
The partial pressure of the oxygen in the mountain is very less due to which it diffusion of the gases becomes very hard and can not breathe easily.
The symptoms of Altitude sickness are a high breathing rate and large exhale. To breathe there, the breathing rate must be high.
Hence, the correct answer is B that is you need to work harder to inhale, expanding your thoracic size beyond what is normal.
For more information, refer to the link:-
https://brainly.com/question/13899929
