0
During breathing, the diaphragm 'pulls' downwards and the ribcage is also 'pulled' outwards (by the intercostal muscles) - these two movements increase the volume of the chest. This increase in volume creates a lower pressure in the lungs compared to the outside of the body and through diffusion, air is 'sucked' into the lungs.
Wiki User
∙ 15y ago
Anonymous
Anonymous
Wiki User
∙ 8y agoThe ribs expand so that we can breathe. When the ribs expand, the volume of the pleural space increases and the lower pressure brings in air.
Add your answer:
Earn +20 pts
What part of the skeleton moves so that we can chew food?
The part of the skeleton that moves so we can chew is the lower jaw or mandible. We need the upper jaw as well even though it doesn't move. It is called the maxilla.
Is the humerus part of the appendicular skeleton?
yes the clavicles are considered part of the appendicular skeleton
sans?
A Lazy depressed, short, skeleton who loves eating ketchup and if you kill his brother he will kill you.
What body system controls the diaphragm?
I think you mean the diaphragm, and that's part of the respiratory system. It's a muscle below the lungs, and when it tightens, it increases the volume of the cavity the lungs are in, so the lungs increase in volume as well, and air rushes into the lungs.
Which of these animals moves with an undulation from the story of to build a fire?
humans are part ape so humans!
Where can you learn the moves from another cindrella story mirror part is there any DVD explaining the moves or so?
Sign up for a dance class and give it your all.
Is breathe or breath the correct spelling?
Which spelling you use depends on which part of speech you're using--"breathe" is for the verb, "breath" is the noun. So you breathe heavily after a ten-mile run, but your breath fogs up the window on a cold day.
What is anther pollen?
the pollen is the mobile part of an anther,so on reproduction & fertilisation it is the pollen that moves,not the anther.
What is the meaning of Respiratory System and its part?
The RESPIRATORY SYSTEM is how you breath, so your; trachea, lungs, alveoli etc hope this helped!
Members of which of the following groups of organisms have an internal skeleton?
internal skeleton is meaning that the organism have backbone. So that means that insect is not part of it. Also examples such as jellyfish, squid, octopus, etc. does not fall in internal skeleton group.
Why can you see your breath when it's cold outside?
okay so your breath is hot and the air is cold so they mix... there is also moisture in your breath so the moisture in your breath might be condensing right in front of you!
What part of the body is like the cell wall?
The cell wall provides support for the cell, so an equivalent for the human body would be the skeleton.
