Nat 5 - Circulation Homework

1.Which line of the table below identifies correctly the functions of macrophages and lymphocytes?

Macrophages / Lymphocytes
A / produce antibodies / engulf bacteria
B / produce antibodies / produce antibodies
C / engulf bacteria / produce antibodies
D / engulf bacteria / engulf bacteria

2.Which line in the table below identifies correctly how lymphocytes destroy bacteria?

Phagocytosis / Antibody production
A / yes / yes
B / yes / no
C / no / yes
D / no / no

3.Which line in the table below identifies correctly how macrophages destroy bacteria?

Phagocytosis / Antibody production
A / yes / yes
B / yes / no
C / no / yes
D / no / no

4.The table below shows some features of blood vessels.

Which line describes features of arteries?

Direction of
blood flow / Detection of
pulse / Presence of
valves
A / towards the heart / yes / no
B / away from the heart / no / yes
C / towards the heart / no / yes
D / away from the heart / yes / no

5.The hepatic portal vein transports

Aglucose from the large intestine to the liver

Bamino acids from the small intestine to the liver

Cfats from the lacteal to the liver

Durea from the kidneys to the liver

Questions 6 and 7 refer to the diagram below which shows a section through a mammalian heart.

6.Which arrow identifies the vena cava?

A1

B2

C3

D4

7.Which heart chamber pumps blood to the lungs?

8. The diagram below shows part of the human circulatory system.

(a)Name the blood vessels labelled A, B and C in the diagram.

(b)The diagram below shows a cross section through an artery.

layer X

inner

elasticnarrow central

layercavity

(i)Describe layer X.

(ii)Describe how the structure of layer X is related to its function.

(ii)The pulse beat can be felt in an artery.What causes the pulse beat?

9. The diagram below shows human blood as seen through a microscope.

(a)Name the two parts of the blood involved in the transport of substances around the body.

(b)Describe how named substances are transported by each part of the blood.