What is true about the cell shown in the given diagram?

              

   1. It is rarest WBC found in the blood.

   2. It is the largest WBC

   3. Its number is increased in acute bacterial infections

   4. It is involved in transport of blood gases

Subtopic:  Blood: White Blood Cells |
 54%
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Match each item in Column I with one in Column II and choose your answer from the codes given below:

A. Generation             a. AV node of impulse
B. Conduction delay    b. SA node
C. Lub                         c. Closure of semilunar valves
D. Dub                        d. Closure of AV valves

            A.     B.     C.     D.
 1.        a      b       c      d
 2.        b      a       d      c
 3.        a      b       d      c
 4.        b      a       c      d

Subtopic:  Human Heart: Cardiac Cycle |
 86%
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When the plasma of a person has both anti A and anti B antibodies the blood group of this person would be:

1.  A

2.  B

3.  AB

4.  O

Subtopic:  Blood: Blood Group (A,B,O) |
 83%
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During which stage of the cardiac cycle is the first heart sound produced?

1.  Atrial diastole

2.  Joint diastole

3.  Ventricular systole

4.  Ventricular diastole

Subtopic:  Human Heart: Cardiac Cycle |
 86%
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A normal event in the process of blood clotting is the

1. production of erythropoietin.

2. conversion of fibrin to fibrinogen.

3. activation of prothrombin to thrombin.

4. increase in platelets.

Subtopic:  Blood: Blood Clotting |
 79%
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Serum is-

(1) Blood- corpuscles

(2) Blood- corpuscles –clotting factors

(3) Plasma- clotting factors

(4) Both 2 and 3

Subtopic:  Blood: General Description & RBC |
 57%
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Match the following:

i)Fibrinogen        p. Defence

ii)Globulin           q. Osmotic balance

iii)Albumin          r. Clotting

(1) i)r, ii)p, iii)q

(2) i)p, ii)r, iii)q

(3) i)q, ii)p, iii)r

(4) i)r, ii)q, iii)p

Subtopic:  Blood: White Blood Cells | Blood: Blood Clotting |
 91%
From NCERT
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Which of the following are not correct:

i) Spleen is the graveyard for RBC.

ii) All the mammals have biconcave RBCs.

iii) Clotting factors present in plasma are in active form.

iv)All the substances released by platelets are involved in clotting only.

 

(1) i), iii), iv)

(2) ii), iii), iv)

(3) i), ii), iii), iv)

(4) ii), iii)

Subtopic:  Blood: General Description & RBC |
 72%
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Lymph has following properties

i. Same mineral distribution as that of plasma

ii. Intestine also has lymph

iii. Also known as tissue fluid because it helps in exchange

iv. Lymph plays role in defence as well

How many statements are correct?

(1) 3

(2) 2

(3) 4

(4) 1

Subtopic:  Lymph |
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In open circulatory system, blood is pumped through

(1) Sinuses to large vessels

(2) Large vessels to sinuses

(3) Cavities to organs

(4) Spaces to large vessels

Subtopic:  Human Heart: Double Circulation |
 63%
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