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

Mention two structural differences between an artery and a vein.

Give the exact location of: (a) Pericardium (b) Bicuspid valve

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

Mention any two functions of blood.

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

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.