Circulatory Systems

Question 1

what is a double system?

Answer 1

Blood vessels twice through the heart for each circuit of the body.

Question 2

what is a closed system?

Answer 2

The blood is enclosed in blood vessels and does not come directly in contact with the cells of the body.

Question 3

what are the feature of a closed circulatory system?

Answer 3

• Blood enclosed in the vessels
• Heart pumps in the blood around the body under pressure quickly and returns to the heart
• substances enter the body by diffusion through the walls of the blood vessels.

Question 4

where are single closed circulatory systems found in?

Answer 4

number of groups including fish and annelid worms

Question 5

what do single closed circulatory system transport?

Answer 5

Transports blood through a single circuit where blood is pumped by the heart to the gills for oxygenation

Question 6

what are the key features of a single closed circulatory system?

Answer 6

• blood passes through two sets of capillaries before it returns back to the heart.
• first capillaries - exchange oxygen and CO2.
• second capillaries - substances are exchanged between the blood and cell
• blood pressure drops in the system so blood returns to the cell slowly

Question 7

what do the first capillaries exchange in a single closed circulatory system?

Answer 7

exchange oxygen and CO2.

Question 8

what do the second capillaries exchange in a single closed circulatory system?

Answer 8

substances are exchanged between the blood and cell

Question 9

where are open circulatory systems found?

Answer 9

found in mainly invertebrate animals including insects

Question 10

What are the key features of a open circulatory systems ?

Answer 10

• few vessels to contain the transport medium
• pumped straight from the heart into the body cavity of an animal
• transports medium returns to the heart through an open ended vessel

Question 11

what do open circulatory systems transport?

Answer 11

food and nitrogenous waste products and the cells involved in deference against disease

Question 12

what do open circulatory systems not transport?

Answer 12

Oxygen or carbon dioxide

Question 13

where are double closed circulatory systems found in?

Answer 13

found in ventricles in the heart

Question 14

what do double closed circulatory systems transport?

Answer 14

• deoxyenated blood to the lungs
• oxygenated blood to the body

Question 15

what are the key features of a double closed circulatory systems?

Answer 15

• transports substances around the body
• involved in two separate circulations
• blood is pumped from the heart to the lungs to pick up oxygen and unload carbon dioxide
• blood flow through the heart is pumped out to travel all around the body and return to the heart

Question 16

What is a single circulatory system?

Answer 16

In a single circulatory system, the blood passes through the heart once during one complete circuit of the body

Question 17

What is an open circulatory system?

Answer 17

In an open circulatory system, blood is not contained within blood vessels but is pumped directly into body cavities