Fill in the blanks.

(i) The blood from the heart is transported to all parts of the body by the .

(ii) Haemoglobin is present in cells.

(iii) Arteries and veins are joined by a network of .

(iv) The rhythmic expansion and contraction of the heart is called .

(v) The main excretory product in human beings is .

(vi) Sweat contains water and .

(vii) Kidneys eliminate the waste materials in the liquid form called .

(viii) Water reaches great heights in the trees because of suction pull caused by .

(i) The blood from the heart is transported to all parts of the body by the _arteries__.

(ii) Haemoglobin is present in __red blood__ cells.

(iii) Arteries and veins are joined by a network of __capillaries__.

(iv) The rhythmic expansion and contraction of the heart is called __heart beat__.

(v) The main excretory product in human beings is __urea__.

(vi) Sweat contains water and __salts__.

(vii) Kidneys eliminate the waste materials in the liquid form called __urine__.

(viii) Water reaches great heights in the trees because of suction pull caused by __transpiration__.