respiratory/gaseous exchange system (3.1.1c)

Question 1

cartilage

Answer 1

structural support for airways!
prevents lungs collapsing when pressure decreases during exhalation.

Question 1

ciliated epithelium

Answer 1

moves mucus towards the throat, preventing lung infection.

Question 2

goblet cells

Answer 2

secretes mucus in order to trap bacteria/dust.
helped by lysozyme, which digests bacteria.

Question 3

elastic fibres

Answer 3

allows airways to strech when we inhale, and recoil when we exhale - controls air flow.

Question 4

smooth muscle

Answer 4

controls contraction of airways and maintains diameter - controls airflow to/from alveoli.

Question 5

where is cartilage found?

Answer 5

trachea, bronchi, and larger bronchioles.

Question 6

where is ciliated epithelium found?

Answer 6

trachea, bronchi, and bronchioles.

Question 7

where are goblet cells found?

Answer 7

trachea, bronchi, bronchioles.

Question 8

where is smooth muscle found?

Answer 8

trachea and bronchi.

Question 9

where are elastic fibres found?

Answer 9

trachea and bronchi.