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 $(d)$

Explore More

Similar Questions

Cardiac output is determined by.

Identify the correct option:
VesselRenal veinPulmonary arteryHepatic portal veinMain Aortic arch
$(a)$$PO_2 = 95 \, mm \, Hg, PCO_2 = 40 \, mm \, Hg$Less concentration of ions in bloodMore fatty acid and glycerol in the blood$PO_2 = 95 \, mm \, Hg, PCO_2 = 40 \, mm \, Hg$
$(b)$Blood $pH = 7.4$Less excretory substances than other blood vesselsMore nutritive substancesMore oxygen than pulmonary artery
$(c)$Less excretory wastes$PO_2 = 40 \, mm \, Hg, PCO_2 = 45 \, mm \, Hg$Less amount of fatty acid and glycerol compare to other blood vesselsMore excretory substances than renal vein
$(d)$More oxygen than pulmonary arteryMore excretory waste than renal vein$PO_2 = 95 \, mm \, Hg, PCO_2 = 40 \, mm \, Hg$Less excretory waste than hepatic portal vein

Difficult
View Solution

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

Which of the following cells phagocytose microorganisms rapidly?

Analogy type questions:
$(1)$ Fish : Single circulation :: Amphibians : ...........
$(2)$ Between right atrium and right ventricle : Tricuspid valve :: Between left atrium and left ventricle : .............

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo