Transport in Humans
197 questions· page 1 of 20
Blood is made up from a number of different components.
The pie chart shows the percentage volume of each of the components of blood.
What is the percentage volume of blood for the component that has the function of transporting oxygen?
Options
A 1%
B 30%
C 44%
D 55%
What is the total number of atria and ventricles that the blood passes through during two complete circuits of the human body?
Options
A 2
B 4
C 8
D 16
The table shows the range of percentages of different types of tissue found in the walls of the aorta of people of different ages.
Collagen tissue is present in the walls of blood vessels to provide strength and support.
| type of tissue | percentage (%) young adult | percentage (%) old adult |
|---|---|---|
| elastic | 38–46 | 28–40 |
| muscle | 14–21 | 9–37 |
| collagen | 13–36 | 24–51 |
Which conclusion about the range of percentages is correct?
Options
A The range of collagen tissue found in people of both age groups is 39.
B The range of each type of tissue is smaller in old adults than in young adults.
C The range of muscle tissue in old adults is four times greater than in young adults.
D The range of elastic tissue in people of both age groups is the greatest of all three types of tissue.
The table shows information about three different blood vessels, P, Q and R.
One of the vessels is an artery, one is a capillary and one is a vein.
| blood vessel | P | Q | R |
|---|---|---|---|
| thickness of wall / | 500 | <1 | 1000 |
| diameter of lumen / | 5 | 0.008 | 4 |
Using the information from the table, what is the cross-sectional area of the lumen of the vein?
(Assume )
Options
A
B
C
D
Mammals have a double circulatory system.
What is meant by a double circulatory system?
Options
A The blood is always enclosed in vessels or in the heart chambers.
B The blood passes through the heart twice for each complete circuit of the body.
C The circulatory system consists of two types of blood vessel.
D The heart consists of two chambers.
Pulmonary stenosis is a condition caused by the narrowing of the entrance to the blood vessel leaving the right ventricle.
Where in the body will blood flow be reduced first as a result of pulmonary stenosis?
Options
A reduced blood flow to the brain
B reduced blood flow to the left ventricle
C reduced blood flow to the lungs
D reduced blood flow to the right atrium
In one beat of the heart, the muscles in the atria and ventricles contract and relax, pushing blood out of the heart and into the circulatory system.
The diagram shows how long it takes for a heart to beat twice.
What is the heartbeat rate?
Options
A 60 beats per minute
B 80 beats per minute
C 100 beats per minute
D 120 beats per minute
The photomicrograph shows a sample of blood viewed through a light microscope.
Which row shows the functions of the labelled parts of the blood?
Options
| oxygen transport | hormone transport | engulfing pathogens | |
|---|---|---|---|
| A | 1 | 3 | 2 |
| B | 2 | 3 | 1 |
| C | 1 | 2 | 3 |
| D | 3 | 2 | 1 |
The table shows the mean rate of blood flow through some blood vessels.
| blood vessel | mean rate of blood flow / per |
|---|---|
| W | 0.4 |
| X | 5.0 |
| Y | 15.0 |
| Z | 1200.0 |
Which row correctly identifies the blood vessels?
Options
| W | X | Y | Z | |
|---|---|---|---|---|
| A | main artery | small artery | small vein | capillary |
| B | small vein | small artery | main artery | capillary |
| C | capillary | small vein | small artery | main artery |
| D | capillary | small artery | small vein | main artery |
What happens during blood clotting?
Options
A Insoluble fibrin is converted to soluble fibrinogen.
B Insoluble fibrinogen is converted to soluble fibrin.
C Soluble fibrin is converted to insoluble fibrinogen.
D Soluble fibrinogen is converted to insoluble fibrin.