The calcium binding protein in smooth muscles leading to contraction is:

1.  Calmodulin

2.  Troponin

3.  Tropomyosin

4.  Ubiquitin

Consider the characters of a particular type of joint:

What is this type of joint called?

1. Hinge

2. Ball and socket

3. Pivot

4. Saddle

The joint which play a significant role in locomotion:-

1.  Synarthrosis

2.  Synchondrosis

3.  Diarthrosis

4.  Both (1) and (3)

Zygomatic and sphenoid bone is an example of

1.  Cranial bones.

2.  Cranial bone and facial bone respectively.

3.  Facial bone and cranial bone respectively.

4.  Facial bone.

Which of the following is required for the breaking of cross-bridge during muscle contraction?

1. ATP and Ca⁺⁺

2.  ADP and Ca⁺⁺

3.  Only Ca⁺⁺

4.  ATP only

Cardiac muscles can be best defined as:

During skeletal muscle contraction, increase in calcium levels leads to binding of calcium to a subunit of _______ on ______ filaments and thereby removes the masking of active sites for ______.

1. Troponin, Tropomysin, Myosin

2. Calmodulin, Actin, Myosin

3. Troponin, Actin, Myosin

4. Calmodulin, Actin, Myosin

Match each item in Column I with one in Column II and choose your answer from the codes given below:
       Type of joint            Example
       A. Hinge            a. First carpo-metacarpal
       B. Pivot              b. Between the carpals
       C. Gliding           c. Atlanto-axial
       D. Saddle           d. Knee joint

            A.    B.    C.     D.
   

1.     d     c      b      a
   

2.     c     d      b      a
   

3.     c     b      d      a
   

4.     d     b      a      c