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

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)

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

Consider the following statement with respect to heart:

(i) It has the double walled membranous bag.

(ii) Human heart has four chambers: two larger atria and two median ventricles.

(iii) Human heart is mesodermal in origin and is situated in abdominal cavity.

(iv) There is no clear separation between atria and ventricles.

How many of the statements given above are correct?

(1) 2

(2) 3

(3) 1

(4) all are wrong

Which one is incorrect in the following:

(1) Inter atrial septa – thin and muscular

(2) Atrio– ventricular septa – thick and fibrous

(3) Inter ventricular septa – thick and muscular

(4) Pericardium – muscular

SAN is present in __________ while AVN is present in __________.

(1) Right upper corner and left lower corner of both the atria.

(2) Right upper corner and left lower corner of right atrium.

(3) Right upper corner and left lower corner of left atrium.

(4) Right upper corner and left median corner of left atrium

Which one of the following is wrong with respect to nodal tissue.

(1) auto excitable

(2) not localized to a single chamber.

(3) equal ability to excite throughout nodal tissue.

(4) structural changes are observed throughout nodal musculature in different chambers of the heart.

The duration of cardiac cycle is–

(1) 0.8 second

(2) 0.5 second

(3) 0.3 second

(4) 0.4 second

The number of action potential generated by SAN:

(1) 70–75 times per minute.

(2) 50–72 times per minute.

(3) Exact 70 times per minute.

(4) not more than 60 times per minute.

The lub sound of heart is produced during which phase of cardiac cycle?

(1) ventricular systole

(2) atrial diastole

(3) joint diastole

(4) atrial systole