Gaseous Exchange

Question 1

Define trachea

Answer 1

Aka wind pipe

Attaches onto bronchi

Question 2

Define bronchus

Answer 2

Smaller tubes that part into bronchioles

Question 3

Define bronchiole

Answer 3

Tinnier tubes

At the end is the air sac/ alveolus

Question 4

Define alveolus

Answer 4

Aka air sac
Where gas exchange happens
Allows gases to diffuse in and out of the blood

Question 5

Define rib

Answer 5

Bones that attach to spine

Protects lungs

Question 6

Define rib cage

Answer 6

Bony frame
Made up of several ribs
Guards chest / heart and lungs

Question 7

Define intercostal muscle

Answer 7

Muscle that runs in and out of the ribs

Helps breathing = expands and shrinks

Question 8

Define gas exchange

Answer 8

Process is how we get oxygen from the air into our blood

Co2 out of our blood into the air

Question 9

State one property of the trachea and it use

Answer 9

Is a tube with rings

To prevent it from collapsing when deflated

Question 10

What does the alveolus do during inhalation and exhalation

Answer 10

Inhale= inflate
Exhale= deflate

Question 11

Properties of alveolus

And reasons

Answer 11

Walls are felt thick =for diffusion
Large surface area = diffusion
Moist lining =help dissolve gas

Question 12

Define diffusion

Answer 12

Movement of particles form a high concentration to an area of low concentration

Question 13

Describe the concentration within the alveolus

Answer 13

Oxygen= high concentration 
Co2= low concentration

Question 14

Describe the concentration within the capilary

Answer 14

Co2= high concentration 
Oxygen= low concentration 

As the oxygen has been used in respiration of cells producing co2

Question 15

Where does co2 travel within the blood

Answer 15

Plasma

Question 16

Where exactly does the diffusion take place

Answer 16

Across the alveolus membrane

As the alveolus is surrounded by capillaries

Question 17

Describe what happens during the gas exchange

Answer 17

Co2 from the blood diffuses into the surface of the alveolus to be taken back out into the air
Oxygen diffuses into the blood and att chase onto red blood cells

Question 18

State the stages/ structure of the lungs

Answer 18

Air enter through mouth/nose
Passes through the trachea
Trachea branches off into two bronchi
Bronchi further divide into bronchioles
Gases are exchanged at the alveolus