Module 2: Respiration⚡️ Flashcards
What does AEROBIC mean?
Using oxygen/ in the presence of oxygen.
What is the word equation for AEROBIC respiration?
Glucose+oxygen>carbon dioxide+water+energy.
Which three organ systems must work together in order for our cells to respire?
- Digestive system.
- Circulatory system.
- Respiratory system.
What does the digestive system do?
Digestive system - changes large insoluble food molecules into small soluble molecules that are able to be absorbed into the blood stream.
What does the circulatory system do?
Circulatory system – carries the small soluble food molecules and oxygen to every cell in our body and takes away unwanted waste
What does the respiratory system do?
Respiratory System –oxygen is taken into our bodies via the lungs and carbon dioxide is removed.
What is RESPIRATION?
The chemical reaction that releases energy for use in all living cells.
What happens when you INHALE?
- the diaphragm contracts and flattens
- the intercostal muscles contract
- ribs move up and out
- the volume in the chest cavity increases
- the air pressure inside the chest cavity and therefore the lungs decreases below atmospheric air pressure.
- air rushes in from higher pressure onside the mouth into the area of lower pressure in the lungs.
What happens when you EXHALE?
- the diaphragm relaxes and domes back to its original position.
- the intercostal muscles relax.
- ribs move down and in.
- the volume in the chest cavity decreases.
- the air pressure inside the chest cavity and therefore the lungs increases above atmospheric air pressure.
- air rushes out from a higher pressure inside the mouth into the area of lower pressure in the air around us.
What is the amount of oxygen in the air you breathe out and the air you breathe in?
In-21%
Out-16%
What is the amount of carbon dioxide in the air you breathe out and the air you breathe in?
In-0.04%
Out-4%
What is the amount of nitrogen in the air you breathe out and the air you breathe in?
In-78%
Out-78%
What is the amount of water vapour in the air you breathe out and the air you breathe in?
In- a little
Out- a lot
What adaptations do ALVEOLI have to carry out gas exchange efficiently?
Alveoli are adapted to carry out gas exchange efficiently
- have thin, moist walls so that gases can pass through them.
- They are also surrounded by many blood capillaries.
- Are very small, only 0.2mm in diameter and give the lungs a spongy texture and an enormous surface area.
What is ASTHMA?
A condition caused by irritation of the airways. The narrowed airways result in breathing difficulties.
What are the alveoli?
Air sacs in the lungs where gas exchange takes place
What is the thorax?
The upper part of the body enclosed inside the rib cage
What is the trachea?
The wind pipe
What is the bronchus
A branch of the trachea- one goes to each lung
What are the bronchioles?
Small tubes that carry air into and out of all the parts of the lungs
What is ventilation?
Getting air in and out of the lungs
What is gas exchange?
How the gases move into or out of the bloodstream
What is Inhaling?
Breathing in (INhaling for in)
What is exhaling?
Breathing out (EXhaling for exit)
