DIRECTIONS : Each questions contain STATEMENT-1 (Assertion) and STATEMENT-2 (Reason).Each question has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.

Statement 1 : Arthritis or inflammation of a joint makes the joint painful.
Statement 2 : Some toxic substances are deposited at the joint.

Which of the following statements about the striated muscles is false ?

(1) In the centre of each I-band is an elastic fibre (Z-line)which bisects it
(2) Thin filaments are firmly attached to the Z-line
(3) M-line is a fibrous membrane in the middle of A-bands
(4) A sarcomere comprises one full A-bands and 2 half I-bands.

Read the following A to D statements and select the one option that contains both correct statements

(1) Z-line is present in the centre of the light band.
(2) Thin filaments are firmly attached to the M-line
(3) The central part of thick filaments, not overlapped by thin filaments is called Z-band
(4) Light band contains only thin filaments

Match Column – I with Column – II

Match Column – I with Column – II

Go through the following diagram describing muscle contraction

Now identify A to E.

Following is the figure of actin (thin) filaments. Identify A, B and C.

Choose the letter from the figure that most appropriately corresponds to the structure-

I. A-band
II. I-band
III. Sarcomere
IV. H-zone
V. Myosin
VI. Actin, Troponin, Tropomyosin
VII. Z-line

Consider the diagram given below :

Parts labelled as ‘A’, ‘B’, ‘C’, ‘D’, and ‘E’ respectively indicate

Given below is a diagram of the left human hindlimb as seen from front. It has certain mistakes in labeling. Two of the wrongly labelled bones are