Given below are four statements (i-iv) regarding human blood circulatory system. (i) Arteries are thick-walled and have narrow lumen as compared to veins. (ii) Angina is acute chest pain when the blood circulation to the brain is reduced. (iii)Persons with blood group AB can donate blood to any person with any blood group under ABO system.(iv) Calcium ions play a very important role in blood clotting. Which two of the above statements are correct? (a) (i) and (iv) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv)

Given below are four statements (i-iv) regarding
human blood circulatory system.
(i) Arteries are thick-walled and have narrow
lumen as compared to veins.
(ii) Angina is acute chest pain when the blood
circulation to the brain is reduced.
(iii)Persons with blood group AB can donate blood
to any person with any blood group under ABO
system.
(iv) Calcium ions play a very important role in
blood clotting.
Which two of the above statements are correct?
(a) (i) and (iv)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)
by

1 Answer

Answer :

(a) (i) and (iv)
by

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