Ribs 11 and 12 are called floating ribs because they
1. do not articulate with the vertebrae
2. attach only indirectly to the sternum
3. have no connection to the sternum
4. do not articulate directly with any other bone

An acromian process is characteristically found in the -

1. Skull of frog

2. Sperm of mammals

3.  Pelvic girdle of mammals

4. Pectoral girdle of mammals

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

Bone is a _______ connective tissue, bone cells called ________ are located in spaces called ______.

1. Dense, Osteocytes, Lacunae

2. Specialized, Osteocytes, Lacumae

3. Dense, Osteoblasts, Haversian canal

4. Specialized, Osteoclasts, Haversian canal

Identify the incorrectly matched pair:

      Disease                            Cause

1.  Myasthenia gravis            Antibodies against neuromuscular junction

2.  Tetany                              Hypocalcemia

3.  Osteoporosis                   Hypoparathyroidism

4.  Gout                                 Accumulation of uric acid crystals

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

1.  Calmodulin

2.  Troponin

3.  Tropomyosin

4.  Ubiquitin

The joint which play a significant role in locomotion:-

1.  Synarthrosis

2.  Synchondrosis

3.  Diarthrosis

4.  None of these

What part of the scapula bone shown in the figure articulates with the head of the humerus?

1. A

2. B

3. C

4. D

The length of which of the following regions shown in the given diagram of a sarcomere remains unchanged during muscle contraction?

1. 1

2. 2

3. 7

4. 6

Which of the following statements is wrong?
1. Movement is one of the significant features of living beings
2. Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement
3. Animals and plants exhibit a wide range of movements
4. Movement of cilia, flagella, and tentacles is limited to few organisms