(b) Table 1.1 shows the composition of blood, tissue fluid and lymph.
Table 1.1
component
|
blood
|
tissue fluid
|
lymph
|
red blood cells
/ cells mm−3 × 106
|
5.1
|
0.0
|
0.0
|
white blood cells
/ cells mm−3
|
9 000
|
75
|
1 000 000
|
glucose / g dm−3
|
800
|
800
|
775
|
protein / g dm−3
|
71
|
1
|
26
|
Explain the differences between the composition of blood, tissue fluid and lymph as shown in Table 1.1, for white blood cells, glucose and protein.
white blood cells .......................................................................................................
glucose ............................................................................................................................
protein ..............................................................................................................................
white blood cells
1 (named) white blood cells can, leave capillaries / enter tissue fluid ;
A diapedesis / (suggestion that some) too large to leave the, blood / capillaries
2 high number in, lymph nodes / thymus / bone marrow / spleen ;
A stored / produced glucose
3 small (molecule) ;
4 filtered / diffuses / leaves / leaks, from blood / from capillaries / into tissue fluid ;
5 taken up / used, by cells in respiration ;
Ignore supply protein
6 too large to, leave capillaries / enter lymph / enter tissue fluid ;
7 (in lymph / tissue fluid) antibodies / proteins, from / secreted by, lymphocytes / other cells ;