Consider the following statements:
I: | The head of myosin is made of LMM and the tail is made of HMM |
II: | F Actin is monomeric while G actin is polymeric |
III: | Tropomyosin is composed of three globular proteins |
During muscle contraction, the length of which of the following remains the same?
1. I-Band
2. H-Zone
3. Sarcomere
4. A-Band
Which of the following is a sesamoid bone?
1. Sternum
2. Clavicle
3. Patella
4. Navicular
Accumulation of uric acid in joints will lead to:
1. | Rheumatoid arthritis | 2. | Osteoarthritis |
3. | Osteomalacia | 4. | Gouty arthritis |
The total number of floating ribs in human skeleton is:
1. | 2 | 2. | 4 |
3. | 6 | 4. | 14 |
As the distance from Z line to Z line decreases, which bands shorten in a sarcomere?
1. | the I band and H band | 2. | the I band and A band |
3. | the A band and H band | 4. | all bands shorten |
The joint between atlas and axis vertebra is classified as:
1. | Saddle joint | 2. | Pivot joint |
3. | Gliding joint | 4. | Hinge joint |
The dark and light bands seen as striations in a skeletal muscle are located on:
1. | Myofilaments | 2. | Muscle fiber |
3. | Myofibril | 4. | Motor unit |
All the following regarding red muscle fibers are true except:
1. | They are adapted for slow and sustained activity |
2. | They have a high content of myoglobin |
3. | They are rich in mitochondria |
4. | They depend on anaerobic process for energy |
A flat bone present on the ventral midline of thorax is called as:
1. | Hyoid | 2. | Clavicle |
3. | Sternum | 4. | Vertebral body |