Persons with ‘AB’ blood group are called as "universal recipients". This is due to

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

Which of the following gastric cells indirectly help in erythropoiesis?

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

Serum differs from blood in

Person with blood group AB is considered as universal recipient because he has

A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?

Which one of the following plasma proteins is involved in the coagulation of blood?

A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC because ‘O’ in it refers to having

f you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

Examination of blood of a person suspected of having anaemia, shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following, is likely to alleviate his symptoms?

Antibodies in our body are complex

Which of the following substances, if introduced in the blood stream, would cause coagulation, at the site of its introduction?

You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose?

What is correct regarding leucocytes?

What is correct for blood group ‘O’?

Haemoglobin is a type of

Which is the principal cation in the plasma of the blood?

Which of the following is agranulocyte?

The life span of human WBC is approximately

Which one of the following vertebrate organs receives the oxygenated blood only?

Antigens are present

Cells formed in bone marrow include

Removal of calcium from freshly collected blood would

A person with blood group A requires blood. The blood group which can be given is

Which one engulfs pathogens rapidly?

Child death may occur in the marriage of

RBCs do not occur in

Breakdown product of haemoglobin is

One of the factors required for the maturation of erythrocytes is

The haemorrhagic disease of new born is caused due to the deficiency of

Vitamin-K is required for

The QRS complex in a standard ECG represents

All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker?

A specialised nodal tissue embedded in the lower corner of the right atrium, close to atrio-ventricular septum, delays the spreading of impulses to heart apex for about 0.1 sec. The delay allows

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when

Which one of the following animals has two separate circulatory pathways?

Bundle of His’ is a part of which one of the following organs in humans?

If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

In humans, blood passes from the post caval to the diastolic right atrium of heart due to

Systemic heart refers to

Bundle of His is a network of

In mammals, histamine is secreted by

The correct route through which pulse-making impulse travels in the heart is

Pacemaker of heart is

Dup sound is produced during closure of

Tricuspid valve is found in between

Blood pressure in the pulmonary artery is

In mammals, which blood vessel would normally carry largest amount of urea?

Arteries are best defined as the vessels which

Which one of the following statements is correct regarding blood pressure?

Pulmonary artery is different from pulmonary vein because it has

The thickening of walls of arteries is called

An adult human with average health has systolic and diastolic pressures as

Closed circulatory system occurs in

Wall of blood capillary is formed of

Splenic artery arises from

A vein possesses a large lumen because

Arteries carry oxygenated blood except

Which of the following statements is true for lymph?

Which of the following is not main function of lymph glands?

The lymph serves to

Which of the following conditions causes erythroblastosis foetalis?

Continuous bleeding from an injured part of body is due to deficiency of

The blood cancer is known as