Name the mineral elements required for: (a) Clotting of blood (b) Synthesis of thyroxine

Mention two structural differences between an artery and a vein.

Define the term-Diapedesis.

Mention any two functions of blood.

Name the white blood cells that: (a) Show phagocytosis (b) Produce antibodies

Why are RBCs efficient in their functions though they lack nucleus and mitochondria?

Carbon monoxide is dangerous when inhaled in excess. Comment on the statement.

State the exact location of the following structures: (a) Thyroid gland (b) Dura mater (c) Amniotic fluid (d) Papillary muscles (e) Islets of Langerhans

Oxygenated blood to liver is supplied by: (a) Hepatic artery (b) Hepatic vein (c) Inferior vena cava (d) Hepatic portal vein

The heart sound 'Dup' is produced when: (a) Semilunar valves open (b) Atrio ventricular valves close (c) Semilunar valves close (d) Atrio ventricular valves open

The life span of an RBC is: (a) 120 days (b) 220 days (c) 20 days (d) 2 weeks

The immediate steps to be taken when a person suffers a heart attack are: P. Loosen the clothes Q. Make the person lie down in an airy place R. Take the person to the hospital S. Encourage conversation (a) P and Q (b) P and S (c) R and S (d) P, Q and R