Answer

(i)         Identify the blood vessels shown in figures 1a & 1b.

1a        artery

1b        vein                                                                                                     [ 2 ]

(ii)        State TWO characteristics of the blood vessel in Figure 1a that relate to its function and explain how each characteristic helps the blood vessel in the efficient transport of blood.

Characteristic:

thick muscular wall;

Function:

with stand high pressures;

Characteristic:

smaller lumen;

Function:

maintain blood pressure                                                                                              [ 4 ]

[Total: 6]