1.15 The Structure Of The Respiratory System And The Composition Of Air

Question 1

What is the path of oxygen when it first enters body from breathing?

Answer 1

Nose->Pharynx->Larynx->Trachea->Bronchi->Broncioles->Alveoli->Bloodstream

Question 2

What is the trachea?

Answer 2

The tube which branches off into the 2 bronchi

Question 3

What are the bronchi?

Answer 3

Two tubes which branch off from the trachea which have lots of bronchioles leading off of them

Question 4

What are the bronchioles?

Answer 4

Small branches off the bronchi which alveoli are attached to

Question 5

What are the alveoli?

Answer 5

The place where gaseous exchange happens. Connected to bronchioles

Question 6

What are the muscles on the outside of the lungs?

Answer 6

Intercostal muscles

Question 7

What is the muscle beneath the lungs?

Answer 7

The diaphragm

Question 8

What is the purpose of the respiratory system?

Answer 8

.To bring oxygen into the body to produce energy aerobically
.To expel carbon dioxide when it is created in muscles when we exercise

Question 9

What is the composition of inhaled air?

Answer 9

78% Nitrogen
21% Oxygen
0.03% Carbon Dioxide
0.97% Other gases

Question 10

What is the composition of exhaled air?

Answer 10

78% Nitrogen
16% Oxygen
4% Carbon Dioxide
2% Other gases