6.6/6.7 Human Gas Exchange And Its Mechanism Flashcards
1
Q
What surrounds the trachea and bronchi and what does it do?
A
C shaped cartilage
Prevents food from pressing upon it
2
Q
What muscle surrounds the lungs and what bone is it on?
A
Intercostal muscle
Rib cage
3
Q
What cells are in the trachea that prevent pathogens from entering?
A
Goblet cells
Cillia
4
Q
What cells line the alveoli and bronchioles?
A
Squamous epithelial cells
5
Q
What are the 4 adaptations of alveoli?
A
Thin squamous epithelial cells
Steep conc gradient
Collagen fibres prevent bursting
Moist allows gas movement
6
Q
What is inhilation and expiration?
A
Breathing in and out
7
Q
What type of muscle acts when breathing and what type of muscle is it?
A
Intercostal muscle
Antagonistic
8
Q
Where does the volume increase and decrease when mammals breathe?
A
The thorax
