The blood tastes saltish due to the presence of dissolved

1. Sodium chloride
2. Potassium chloride
3. Ammonium nitrate
4. Sodium nitrate

Which of the following is an organ of the human cardiovascular system ?

1. Liver
2. Heart
3. Kidney
4. Lung

Which of the following blood vessels carries deoxygenated blood to the heart ?

1. Pulmonary artery
2. Aorta
3. Pulmonary vein
4. Vena cavae

Fill in the blanks with suitable words:

(a) The colour of a red blood cell is due to ……………

(b) The two lower chambers of the heart are called ……………

(c) The blood plasma contains dissolved substances such as …………… and ……………

(d) The …………… artery takes the blood from the ventricles to the lungs

(e) The instrument used to find out the blood pressure is known as ……………

(f) The blood loaded with carbon dioxide from the body comes into the …………… of the heart.

(g) The oxygen-rich blood from the lungs comes into …………… of the heart.

(h) The oxygen-rich blood is pumped into different parts of the body through ……………

(i) The carbon dioxide loaded blood from the right ventricle is pumped into the lungs through …………… artery.