Chapter 7- Mass Transport

Question 1

Name of process in which haemoglobin binds with oxygen

Answer 1

Loading/associating

Question 2

Name of process in which haemoglobin releases its oxygen

Answer 2

Unloading/dissociating

Question 3

What is the role of haemoglobin and what are the 2 things it needs to do to be efficient at this?

Answer 3

Role = transport oxygen
1. Readily associate with oxygen at surface of gas exchange
2. Readily dissociate from oxygen at tissues requiring it

Question 4

Features of transport systems

Answer 4

1. suitable medium to carry materials- normally liquid based on water
2. mass transport where transport medium is moved in bulk over large distances
3. closed system of tubular vessels
4. mechanism for moving transport medium within vessels

Question 5

What is the circulatory system in mammals?

Answer 5

closed, double circulatory system- blood passes twice through heart for each complete circuit of the body

Question 6

How does gas exchange take place from the blood vessels into the cells?

Answer 6

by diffusion- rapid due to large SA, short diffusion pathway + steep diffusion gradient

Question 7

What are the 4 blood vessels and where do they transport blood?

Answer 7

1. Aorta = connected to left ventricle + carries oxygenated blood to the body
2. Vena cava = connected to right atrium + carries deoxygenated back from the tissues
3. Pulmonary artery = connected to right ventricle + carries deoxygenated blood to lungs
4. Pulmonary vein = connected to left atrium + carries oxygenated back from the lungs