Consider the following four statements regarding the human circulatory system:
$(a)$ Arteries have thick walls and a narrower lumen compared to veins.
$(b)$ Angina is a sudden chest pain.
$(c)$ In the $ABO$ blood grouping system,a person with blood group $AB$ can donate blood to anyone.
$(d)$ Calcium ions play a significant role in blood clotting.
Which two of the above statements are correct?

  • A
    $(a)$ and $(b)$
  • B
    $(b)$ and $(c)$
  • C
    $(c)$ and $(d)$
  • D
    $(b)$ and $(d)$

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Similar Questions

Choose the correct option:
$(1)$ Depolarization of the ventricles induces the $QRS$ / $T$ waves.
$(2)$ Incomplete double circulation is seen in reptiles / birds.

$A$: $A$ portal system consists of veins that start from capillaries and end into capillaries.
$R$: All vertebrates have a hepatic portal system.

Which of the following is an incorrect combination?

The blood bank of the body or the reservoir where blood is stored and can be mobilized is:

Oedema is defined as:

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