NEET Zoology Body Fluids and Circulation Class 11 Questions

Which of the these has a double closed type of circulatory system?

Role of pacemaker is:

What would be the cardiac output of a person having 72 heart beats minute and stroke volume of 50 ml?

Pacemaker of the heart in man is situated in:

Lack of blood supply to heart muscles that destroys myocardial cells is -

How many statements are correct?

(i) Your heart is myogenic.

(ii) Medulla oblongata can moderate the cardiac function through ANS.

(iii) Erythroblastosis foetalis can be avoided by administering Rh antigens to the mother immediately after the delivery of the first child.

(iv) Birds and mammals have double circulation of blood.

(v) In amphibians, heart pumps mixed blood to the body.

What does the P-wave in an ECG represent?

What is the volume of blood pumped out by each ventricle of the heart per minute called?

Which structure in the heart is responsible for initiating the electrical excitation of the atria?

Which component of blood is primarily involved in the defense mechanisms of the body?

Which protein in blood plasma is primarily needed for the clotting or coagulation of blood?

What is the primary function of fibrinogens in blood?

What causes the closure of the semilunar valves during the cardiac cycle?

What are the two major types of lymphocytes involved in the immune response?

What happens to the semilunar valves during ventricular diastole?

What structure in the heart is referred to as the pacemaker?

What is the role of the sino-atrial node (SAN) in the heart?

Which structure in the heart is known as the pacemaker?

What is the primary function of albumins in blood plasma?

Which plasma protein is primarily involved in maintaining osmotic balance?

Which plasma protein is primarily involved in the defense mechanisms of the body?

What term is used for individuals who have the Rh antigen present on their red blood cells?

What causes the closure of the semilunar valves during the cardiac cycle?

Which type of blood component is responsible for the coagulation of blood?

What happens to the semilunar valves during ventricular diastole?

What are the two major types of lymphocytes involved in the immune response?

Which structure in the heart is responsible for initiating the heartbeat?

What is the primary purpose of the semilunar valves in the heart?

What is the primary role of albumins in blood plasma?

Which component of blood is primarily responsible for maintaining osmotic balance?

What is the primary function of globulins in blood?

What is the primary role of the sino-atrial node in the heart?

What happens to the semilunar valves during ventricular diastole?

What occurs when the ventricular pressure falls during the cardiac cycle?

Which type of blood group is determined by the presence of specific antigens on the surface of red blood cells?

What term is used for individuals who have the Rh antigen present on their red blood cells?

Which of the following statements about blood composition is correct?

Which of the following statements about blood composition is correct?

Which of the following statements about blood composition is correct?

Which of the following combinations about blood groups is correct?

Which combination of statements about blood groups is correct?

Which of the following statements about the heart and circulation is correct?

Which combination of statements about the heart's electrical conduction system and its function is correct?

Which of the following statements about the heart and its circulation are correct?

Which of the following statements about blood composition is correct?

Which of the following statements about the cardiac cycle is correct?

Which of the following combinations correctly describes the functions and components of blood composition?

Which of the following statements about blood composition are correct?

Which of the following statements correctly describe the phases of the cardiac cycle?

Which of the following statements about blood groups is correct?