respiration in humans Flashcards
What is the equation for respiration?
Oxygen + Glutose -> Carbon dioxide + Water +(Energy)
Where does respiration happen?
In every cell
What happens in the process of respiration?
Oxygen and glutose are used in a chemical reaction to release energy for cells. The products of this reaction is carbon dioxide and water which is breathed out. Some of this energy is released as heat
Why does our body need more energy when we exercise?
To contract. Therefore, more respiration occurs in the cells to release more energy. While we need more respiration, oxygen is also needed. So we breathe faster to get as much oxygen as possible for our muscle cells.
Gas exchange in the lungs
The respiratory system functions to intake oxygen essential for respiration and expel carbon dioxide, a waste product. Oxygen is inhaled into the lungs, where it diffuses into the bloodstream. Simultaneously, carbon dioxide is transported to the lungs via the blood, diffusing out for exhalation.
What is the difference between breathing and respiration?
Respiration is a chemical process that takes place in cells to release energy. Breathing is the physical process where you inhale and exhale air in and out of your lungs
What happens to our ribcage when we breathe in?
It moves upwards and outwards. At the same time, our diaphragm moves up. This makes more space in our chest so air rushes into our lungs
What happens to our ribcage when we breathe out?
It moves downwards and inwards. the diaphragm moves down. This makes less space in our lungs so air is pushed out of our lungs
What is the circulatory system?
The process of blood circulating across our body. The blood also carries oxygen and glutose for respiration to every cell and carbon dioxide and water is carried away from the cells
What is oxygenated blood?
oxygenated blood is spread to the body through arteries from the heart. It is high in oxygen and low in carbon dioxide. it is seen as red in diagrams
What is deoxygenated blood?
deoxygenated blood is spread from the body through veins which are going to the heart. it is high in carbon dioxide and low in oxygen. it is seen as blue in diagrams
What is the difference between aerobic and anaerobic respiration?
Aerobic respiration needs oxygen and gives off more energy, but it takes time. In contrast, anaerobic respiration is used when oxygen isn’t available, so it gives less energy but does it faster.
What is the word equation for aerobic respiration?
glucose + oxygen → carbon dioxide + water + energy
What is the word equation for anaerobic respiration?
glutose → lactic acid (+energy)
What are the problems of anaerobic respiration?
-Latic acid is toxic
-It releases less energy than aerobic respiration.
