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The ribs rise up during inhalation when the diaphragm contracts and moves downward, creating more space in the chest cavity. This causes the ribs to move up and outwards. During exhalation, the diaphragm relaxes and moves back up, while the ribs move downward and inwards to decrease the space in the chest cavity.

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Can elephants sit down?

Yes, because elephants are able to get up from lying down if they fall down, and are also able to sit down and get up. What an elephant uniquely cannot do is jump up. They can jump down, or fall, but not leap into the air.


What animal have more ribs?

Snakes have more ribs than other animals - up to 400 pairs !


Unilateral rise and fall of the chest is a sign of?

Unilateral rise and fall of the chest is a sign of uneven chest wall movement, which could indicate a respiratory condition such as pneumothorax (collapsed lung) or pleural effusion (build-up of fluid around the lung). It is important to seek medical attention if this is observed.


Where is down for people in the south pole?

I think from wherever on earth you are accept the equator down is the direction toward somewhere warmer and up is toward colder regions. From the North and South Poles down is every direction you can go It is a very good question: Any direction is always relative to your frame of reference. On the Earth, down is normally towards the centre of the Earth - no matter where you are, England, US, Australia, Mexico or the South Pole. We look down at the floor and look up to the ceiling. However, if you were standing on your head, you could say that you are looking up at your feet whilst looking down at the floor, whilst someone standing next to you would say a) you look silly and b) you are wrong. Down is towards my feet, but both agree on the direction but not terminology. The frame of reference. If you were on Jupiter the same rules would apply, but if you were floating in space then there would be no real up nor down. Generally down is always going to be the direction of the greatest gravitational attraction or in which direction an object will fall in free fall. Hence you "fall down", not "fall up".


Why does the carbon dioxide you breathe out rises?

Even though Carbon Dioxide gas is the heaviest of the gases that make up our atmosphere. Breathing them out of your lungs heats up those Carbon Dioxide molecules to your body temperature and this helps them to rise into the atmosphere and as they cool they fall.

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