Module 3 - Ventilation in insects Flashcards
1
Q
What happens to air after it passes through the spiracles?
A
- enters trachea and then tracheoles so O2 is directly delivered to tissues
2
Q
How is air drawn into the trachea?
A
- insect pumps thorax and abdomen
- these movements change the volume of the body and pressure in the trachea
- air drawn into the trachea or forced out as pressure changes
3
Q
What does the trachea in insects contain?
A
- chitin to strengthen it
4
Q
What is at the end of the tracheoles in insects?
A
- tracheal fluid
