Blood circulatory system

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 ?

Give below are four statement, a-d, regarding human blood circulatory system. Find the correct one. (a) Arteries are thick-walled and have narrow lumen as compared to veins (b) Angina is acute chest pain when the blood circulation to brain is reduced (c ) Person with blood group AB can donate blood to any person with any blood group under ABO system (d) Calcium ions play a very important role in blood clotting

Given below are three statements (I -IV) regarding the human blood circulatory system . (I) In the treatment of angina pectoris nitrous oxide and nitro glycerin are used. (II) veins have thinner walls and broader lumen than arteries . (III) Artificial pacemakers are used in arrhythmia. How many of the above are correct statements ?

in closed circulatory system blood is enclosed by

Assertion : Closed circulatory system is less efficient than open circulatory system Reason : The blood flow is slow is closed circulatory system than in open circulatory system.

Assertion : The open circulatory system is more efficient than the closed circulatory system. Reasoning : The blood flows far more rapidly in open circulatory system than in the closed one.

Body fluids and circulation || introduction || ABO and Rh blood groups || poen and closed circulatory system