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Flashcards in The Breathing System Deck (14):
0

What separates the thorax (top part of your body) and the abdomen (lower part of your body)?

The diaphragm

1

What is the journey of oxygen through your lungs, starting from the trachea?

Trachea, bronchi into separate bronchus into each lung, bronchioles and finally alveoli

2

What does the thorax contain?

The lungs

3

What is ventilation?

The movement of air into and out of the lungs

4

What happens to the intercostal muscles and diaphragm when you breathe in?

They contract

5

What happens to the intercostal muscles and diaphragm when you breathe out?

They relax

6

When you breathe in, the thorax volume increases, what happens to the pressure?

The pressure decreases meaning air is drawn in

7

When you breathe out, the thorax volume decreases, what happens to the pressure?

The pressure increases meaning air is forced out

8

What is a ventilator?

Machines that move air into or out of lungs of people who can't breathe by themselves

9

What did ventilators used to be called?

An iron lung

10

What happens in the lungs?

Transfer of oxygen to the blood and the removal of waste carbon dioxide from the blood

11

What takes place in the alveoli?

Gas exchange

12

How are alveoli specialised to maximise diffusion?

An enormous surface area, moist lining to dissolve gases, very thin walls and a good blood supply

13

What surrounds the alveoli?

A capillary network