Q. No.A flat bone present on the ventral midline of thorax is called as:
1.
Hyoid
2.
Clavicle
3.
Sternum
4.
Vertebral body
The central part of the thick filaments not overlapped by the thin filaments is called as:
| 1. | A band | 2. | I band |
| 3. | H zone | 4. | Sarcomere |
What protein is arranged along the length of actin filaments and is involved in regulation of skeletal muscle contraction?
| 1. | Troponin | 2. | Calmodulin |
| 3. | Tropomyosin | 4. | Light meromyosin |
During relaxation of a skeletal muscle:
| 1. | Calcium ions that are bound to troponin C now bind to troponin A |
| 2. | Cross bridge formation between myosin head and actin takes place |
| 3. | The A band of the sarcomere lengthens |
| 4. | Calcium ions are pumped back to the sarcoplasmic cisternae |
Abnormal curvature of the vertebral column where the alignment shows a lateral deviation is called as:
| 1. | kyphosis | 2. | lordosis |
| 3. | scoliosis | 4. | ankylosis |
The superior and inferior radioulnar joints are examples of
| 1. | gliding joint | 2. | hinge joint |
| 3. | condyloid joint | 4. | pivot joint |
What type of muscles do you expect to find in the inner walls of hollow visceral organs?
| 1. | Involuntary, nonstriated | 2. | Voluntary, nonstriated |
| 3. | Involuntary, striated | 4. | Voluntary, striated |
During muscle contraction, when the myosin head releases ADP and iP it:
1. forms cross bridge with actin
2. pulls actin towards M-line
3. goes back to its relaxed state
4. gets detached from the cross bridge
1. poliomyelitis
2. myasthenia gravis
3. multiple sclerosis
4. muscular dystrophy
Which of the following masks the active sites on actin when a skeletal muscle is relaxed?
| 1. | Tropomyosin | 2. | Troponin |
| 3. | Calmodulin | 4. | Ubiquitin |
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