Question

Name the following. (a) An artery which carries impure blood.
(b) the kind of blood cells which can be squeeze out through the walls of one category of blood vessels.
(c) the kind of blood vessel which have no muscular walls.
(d) the phase of the cardiac cycle in which the auricle contract.

Answer 1

a) pulmonary arteries carry impure blood from body to the lungs .

b) WBCs ( white blood cells ) can be squeeze out through the walls of one category of blood vessels .

let us see why this is so :-

The white blood cells are very small in size and are capable of amoeboid movement by changing the body shape according to the requirement. This property of WBC helps them to squeeze through the walls of blood vessels. 

c) veins don't contain muscular walls .

 The veins are not as muscular, but they contain valves to prevent the blood from flowing backward.

d) blood capillary atrial systole is the phase of the cardiac cycle in which the auricle contracts .

hope it helps !!;

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Answer 2

$\underline{Answer}$

$\text{An artery which carries impure blood known as \green{pulmonary artery}.}$

$\text{\pink{White blood cells} which can be squeeze out through the walls of one category of blood vessels.}$

$\text{\orange{Blood capillaries} is the kind of blood vessel which have no muscular walls.}$

$\text{\blue{Atrial systole} is the phase of the cardiac cycle in which the auricle contract.}$

Figure 1 & 2 helps you