Different Circulatory systems

Question 1

Diffusion

Answer 1

the movement of particles in a liquid or a gas down a concentration gradient from an area when they are at a relatively high concentration to an area where they are at a relatively low concentration.

Question 2

Concentration gradient

Answer 2

the change in concentration of solutes present in a solution between two regions; in biology, this typically means, across a cell membrane.

Question 3

Surface area to Volume ratio (sa:vol)

Answer 3

the relationship between the surface area of an organism and its volume.

Question 4

Vertebrates

Answer 4

animals with a backbone or spinal column; they include mammals, birds, reptiles, amphibians and fish.

Question 5

mass transport system

Answer 5

an arrangement of structures by which substances are transported in the flow of a fluid with a mechanism for moving it around the body.

Question 6

Single circulation system

Answer 6

a circulation in which the heart pumps the blood to the organs of gas exchange and the blood then travels on around the body before returning to the heart.

Question 7

Double circulation system

Answer 7

a circulation that involves two separate circuits, one of deoxygenated blood flowing from the heart to the gas exchange organs to be oxygenated before returning to the heart, and one of oxygenate blood leaving the heart and flowing around the body, returning as deoxygenated blood to the heart.

Question 8

Systemic circulation

Answer 8

carries oxygenated blood from the heart to the cells of the body where oxygen is used, and carries the deoxygenated blood back to the heart

Question 9

Oxygenated blood

Answer 9

blood that is carrying oxygen

Question 10

deoxygenated blood

Answer 10

blood that has given up its oxygen to the cells in the body

Question 11

Pulmonary circulation

Answer 11

carries deoxygenated blood to the lungs and oxygenated blood back to the heart