Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Column I	Column II
I. Smooth muscle II. Skeletal muscle III. Cardiac muscle	1. Striated, voluntary 2. Non-Striated, involuntary 3. Striated, Involuntary

Codes:

             I           II         III 

1.          1           2           3

2.          3           1           2

3.          2           1           3

4.          1           3           2

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Codes

            I           II         III         IV

1.         1           2           3           4

2.         2           1           4           3

3.         2           1           3           4

4.         1           2           4           3

Match each item in Column I with one item in Column II and choose your answer from the codes given below:

Codes :

Which of the following joints would allow no movement?

(1) Fibrous joint

(2) Cartilaginous joint

(3) Synovial joint

(4) Ball and socket joint

Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation.

(1) X = 12, Y = 7           True ribs are attached, dorsally to 

                                      vertebral column and ventrally to

                                      the sternum.

(2) X = 12, Y = 5           True ribs are attached dorsally to

                                      vertebral column and sternum on

                                      the two ends.

(3) X = 24, Y = 7           True ribs are dorsally attached to

                                      vertebral column, but are free on

                                      ventral side.

(4) X = 24, Y = 12         True ribs are dorsally attached to 

                                      vertebral column, but are free on 

                                      ventral side.

The pivot joint between atlas and axis is a type of

(1) fibrous joint                 

(2) cartilaginous joint

(3) synovial joint               

(4) saddle joint

Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.

(1)  Calcium              

(2)  Magnesium

(3)  Sodium              

(4)  Potassium.

Lack of relaxation between successive stimuli in sustained muscle contraction is known as 

(1) fatigue   

(2) tetanus   

(3) tonus   

(4) spasm

Which of the following is not a function of the skeletal system?

1. Production of erythrocytes

2. Storage of minerals

3. Production of body heat

4. Locomotion

Sliding filament theory can be best explained as