Body Fluids and Circulation PYQ — Page 2

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 $0.1 \mathrm{sec}$. The delay allows

Match the items given in Column I with those in Column II and select the correct option given below: <table class="pyq-table"><tbody><tr><td></td><td>Column - I</td><td></td><td>Column - II</td></tr><tr><td>a.</td><td>Fibrinogen</td><td>i.</td><td>Osmotic balance</td></tr><tr><td>b.</td><td>Globulin</td><td>Ii.</td><td>Blood clotting</td></tr><tr><td>c.</td><td>Albumin</td><td>iii.</td><td>Defense mechanism</td></tr></tbody></table>

Match the items given in Column I with those in Column II and select the correct option given below: <table class="pyq-table"><tbody><tr><td></td><td>Column - I</td><td></td><td>Column - II</td></tr><tr><td>a.</td><td>Tricuspid valve</td><td>i.</td><td>Between left atrium and left ventricle.</td></tr><tr><td>b.</td><td>Bicuspid valve</td><td>ii.</td><td>Between the right ventricle and pulmonary artery.</td></tr><tr><td>c.</td><td>Semilunar valve</td><td>iii.</td><td>Between the right atrium and right ventricle.</td></tr></tbody></table>

Adult human RBCs are enucleate. Which of the following statement(s) $is/are$ most appropriate explanation for this feature? (i) They do not need to reproduce (ii) They are somatic cells (iii) They do not metabolize (iv) All their internal space is available for oxygen transport

The hepatic portal vein drains blood to the liver from

Serum differs from blood in

Blood pressure in the pulmonary artery is:

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

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

Which one of the following is correct?

If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?

Blood pressure in the mammalian aorta is maximum during

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

How do parasympathetic neural signals affect the working of the heart?

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

The diagram given here is the standard ECG of a normal person. The P-wave represents the 

Figure shows schematic plan of blood circulation in human with labels $A$ to D. Identify the label and give its function/s 

The figure shows blood circulation in humans with labels a to b. Select the option which gives correct identification of label and functions of the part. 

The figure shows a human blood cell. Identify it and give its characteristics. 

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?

People who have migrated from the planes to an area adjoining Rohtang Pass about six months back

A patient brought to a hospital with myocardial infarction is normally immediately given

Which one of the following human organs is often called the 'graveyard' of RBCs?