Locomotion and Movement

The contractile protein of skeletal muscle involving ATPase activity is

1. troponin
2. tropomyosin
3. myosin
4. -actinin.

An acromion process is characteristically found in the

1. pelvic girdle of mammals
2. pectoral girdle of mammals
3. skull of frog
4. sperm of mammals.

Which of the following pairs is correctly matched?

1. Hinge joint – Between vertebrae
2. Gliding joint – Between zygapophyses of the successive vertebrae
3. Cartilaginous joint – Skull bones
4. Fibrous joint – Between phalanges

What will happen if ligaments are torn?

1. Bones will move freely at joint and no pain.
2. Bone less movable at joint and pain.
3. Bone will become unfixed.
4. Bone will become fixed.

Which statement is correct for muscle contraction?

1. Length of H-zone decreases
2. Length of A-band remains constant
3. Length of I-band increases
4. Length of two Z-line increases

What is sarcomere?

1. Part between two H-lines
2. Part between two A-lines
3. Part between two I-bands
4. Part between two Z-lines

Sternum is connected to ribs by

1. bony matter
2. white fibrous cartilage
3. hyaline cartilage
4. areolar tissue

Bone related with skull is

1. coracoid
2. arytenoid
3. pterygoid
4. atlas

What is the name of joint between ribs and sternum?

1. Cartilaginous joint
2. Angular joint
3. Gliding joint
4. Fibrous joint