2.3A Different types of circulatory system

Question 1

name the 4 types of circulatory system

Answer 1

1. open
2. closed
   2a. single
   2b. double

Question 2

what is a open circulatory system

Answer 2

Blood is not held within blood vessels. It circulates within the animal’s body cavity.
oxygen is delivered to the tissues by a tracheal system

Question 3

what species is an open circulatory system seen in

Answer 3

invertebrates

Question 4

what are the disadvantages of an open circulatory system

Answer 4

• slow movement of blood due to low pressure
• body movements have an effect on the circulation of blood
• little control over direction of blood flow

Question 5

what is a closed circulatory system

Answer 5

blood is held within blood vessels and does not leave.
Tissue fluid is responsible for bathing animals tissue. This allows exchange of nutrients and waste

Question 6

what species is a closed circulatory system seen in

Answer 6

vertebrates and larger invertebrates

Question 7

advantages of a closed system

Answer 7

• faster movement of blood (due to higher pressure)
• faster removal of waste + delivery of nutrients

Question 8

what is a closed single system

Answer 8

blood flows through the heart once on each circuit of the body

Question 9

what is a closed double system

Answer 9

blood flows through the heart twice for each circuit of the body.
a double system is made up of 2 separate circuits