Contraction of the intercostals and diaphragm cause the thoracic cavity to expand, and the air pressure in the lungs to decrease.
this decrease in pressure then pulls in air from outside, thus inspiration occurs.
Answer: A large dome-shaped muscle under the lungs called the diaphragm squeezes downward when you breathe in, making a vacuum that causes a rush of fresh air into your lungs. The opposite happens when you breathe out -- your diaphragm relaxes upward, pushing on your lungs, letting them deflate. (A whole explanation from my science book. Hope this helps!)
Up to 60% of the human adult body is water
Answer:
It depends on the person your getting it from. For example, Brainly is kinda like a social media because people post stuff for others to respond. Depending on the characteristic of the person, the answer will be right... or wrong. I say this because goofy people give goofy answers such as 1+1= 4.
People thats mature will anwer responsibly, like I'm doing.
Explanation:
DOT GET FOOLED.. im prolly the goofiest person on this site xD
