2.3 Open or closed circulation Flashcards
(7 cards)
1
Q
What are the features of a transport system?
A
- A suitable medium to carry materials.
- A pump for moving blood.
- Valves to maintain the flow in one direction.
2
Q
What do some transport systems have?
A
- Respiratory pigment
- A system of vessels with branching network to distribute the transport medium to all parts of the body.
3
Q
What organisms have an open circulatory system?
A
Insects.
4
Q
What does the blood do in an open circulatory system?
A
The ‘blood’ bathes all the cells and organs of the body.
5
Q
What is the blood in an open circulatory system called?
A
Th haemolymph.
6
Q
Where is the haemolymph?
A
In the body cavity or haemocoel.
7
Q
A
