Module 3 Section 1 - The Gaseous Exchange System In Mammals

Question 1

Describe the pathway of air entering the human body

Answer 1

nose/mouth - trachea - bronchi - bronchioles - alveoli

Question 2

What structures in the gaseous exchange system helps to exchange gases efficiently

Answer 2

Goblet cells
Cilia
Elastic fibres
Smooth muscle
Rings of cartilage

Question 3

What is the function of the goblet cells

Answer 3

Secretes mucus, mucus traps microorganisms and dust particles in the inhaled air to stop them reaching the alveoli

Question 4

What is the function of the cilia

Answer 4

The cilia beat the mucus, this moves the mucus upwards and away from the alveoli towards the throat, where it is swallowed. This helps to prevent lung infections

Question 5

What is the function of elastic fibres

Answer 5

They help the process of breathing out. On breathing in the lungs inflate and the elastic fibres are stretched. Then the fibres recoil to help push the air out when exhaling

Question 6

What is the function of smooth muscle

Answer 6

Smooth muscle allows the diameter of the trachea, bronchi and bronchioles to be controlled.

Question 7

What happens to smooth muscle during exercise

Answer 7

It relaxes making the diameter of trachea, bronchi and bronchioles wider. This means there is less resistance to airflow and air cans move in and out of the lungs more easily

Question 8

What is the function of the rings of cartilage

Answer 8

They provide support for the trachea and bronchi. It is strong but flexible and stops the trachea and bronchi from collapsing when you breath in and pressure drops

Question 9

Is cartilage present in the trachea

Answer 9

Yes, large C-shaped pieces

Question 10

Is cartilage present in the bronchi

Answer 10

Yes, smaller pieces

Question 11

Is cartilage present in the larger bronchiole

Answer 11

No

Question 12

Is cartilage present in the smaller bronchiole

Answer 12

No

Question 13

Is cartilage present in the smallest bronchiole

Answer 13

No

Question 14

Is cartilage present in the alveoli

Answer 14

No

Question 15

Is smooth muscle present in the trachea

Answer 15

Yes

Question 16

Is smooth muscle present in the bronchi

Answer 16

Yes

Question 17

Is smooth muscle present in the larger bronchiole

Answer 17

Yes

Question 18

Is smooth muscle present in the smaller bronchiole

Answer 18

Yes

Question 19

Is smooth muscle present in the smallest bronchiole

Answer 19

No

Question 20

Is smooth muscle present in the alveoli

Answer 20

No

Question 21

Is elastic fibres present in the trachea

Answer 21

Yes

Question 22

Is elastic fibres present in the bronchi

Answer 22

Yes

Question 23

Is elastic fibres present in the larger bronchiole

Answer 23

Yes

Question 24

Is elastic fibres present in the smaller bronchiole

Answer 24

Yes

Question 25

Is elastic fibres present in the smallest bronchiole

Answer 25

Yes

Question 26

Is elastic fibres present in the alveoli

Answer 26

Yes

Question 27

Is goblet cells present in the trachea

Answer 27

Yes

Question 28

Is goblet cells present in the bronchi

Answer 28

Yes

Question 29

Is goblet cells present in the larger bronchiole

Answer 29

Yess

Question 30

Is goblet cells present in the smaller bronchiole

Answer 30

No

Question 31

Is goblet cells present in the smallest bronchiole

Answer 31

No

Question 32

Is goblet cells present in the alveoli

Answer 32

No

Question 33

Is the epithelium ciliated in trachea

Answer 33

Yes, ciliated

Question 34

Is the epithelium ciliated in bronchi

Answer 34

Yes, ciliated

Question 35

Is the epithelium ciliated in large bronchiole

Answer 35

Yes, ciliated

Question 36

Is the epithelium ciliated in the smaller bronchiole

Answer 36

Yes, ciliated

Question 37

Is the epithelium ciliated in smallest bronchiole

Answer 37

No cilia

Question 38

Is the epithelium ciliated in alveoli

Answer 38

No cilia