Fill in the blanks.

1. ________________ generally carry impure blood.
2. The upper chambers of the heart have _______________ walls and are called ______________ .
3. The lower chambers of the heart called ________________ pump blood out of the heart.
4. Circulation of blood pressure the heart and lungs is called _______________ circulation.
5. The normal blood pressure in an adult is _______________ .
6. The device used to hear heartbeats is called a ________________ .

Tick the most appropriate answer.

1.  Which of the following blood cells are without nuclei?
   1.  RBCs
   2.  WBCs
   3.  Blood platelets
   4.  a and c
2.  Blood cells which protect the body from diseases are
   1.  erythrocytes
   2.  leucocytes
   3.  thrombocytes
   4.  osteocytes
3.  Which of the following blood cells are responsible for the clotting of blood?
   1.  Erythrocytes
   2.  Leucocytes
   3.  Thrombocytes
   4. Lymphocytes
4.  Which blood group is known as the universal recipients?
   1.  A
   2.  B
   3.  AB
   4.  O
5.  The finest of all blood vessels are the 
   1.  veins
   2.  arteries
   3.  aorta
   4.  capillaries
6.  The vein which brings deoxygenated blood from the posterior part of the body is the
   1.  pulmonery vein
   2.  superior vena cava
   3.  inferior vena cava
   4.  none of these
7.  The only artery which carries deoxygenated blood is the 
   1.  aorta
   2.  pulmonary artery
   3. superior vena cava
   4.  inferior vena cava
8.  The main artery which emerges from the left ventricle of the heart is the
   1.  pulmonary artery
   2.  superior vena cava
   3.  inferior vena cava
   4.  aorta
9.  The colour of the red blood cells is due to
   1.  haemoglobin
   2.  carboxyhaemoglobin
   3.  carbaminohemoglobin
   4.  none of these
10.  Blood group A has 
    1.  antigen A and antibody B
    2.  antigen B and antibody B
    3.  antigen A and antibody A
    4.  antigen O and antibody AB

Fill in the blanks.

1.  ________________ are the blood vessels which carry blood away from the heart.
2.  The heart beats at an average of ______________ times per minute.
3.  The pulmonary artery carries blood from ________________ to the _____________ .
4.  Oxygenated blood is found in the ________________ side of the heart.
5.  The largest artery in the body is __________________ .
6.  The stretching and relaxing of arteries with each heartbeat felt as throbbing is called _____________ .

Define erythrocytes.

Define blood transfusion.