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Q. No.Consider the statements given below and choose the option that correctly states them as true(T) or false (F)
(a)
Locomotion, changes of body postures and heat production are some of the functions of skeletal muscle tissue
(b)
Actin filaments are firmly attached to the Z-line
(c)
The portion of myofibril between non-consecutive 'Z' lines is called sacromere
(d)
Muscles constitute more than 50% of the body weight in an adult human
a
b
c
d
1.
T
T
T
T
2.
T
F
F
T
3.
T
T
F
F
4.
F
T
T
T
Subtopic: Introduction to Locomotion | Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Sarcomere |
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Select the incorrect matching of three items and their grouping category
| 1. | IIeum, ischium pubis - Form coxal bones of pelvic girdle |
| 2. | Actin, myosin, troponin - Muscle proteins |
| 3. | Malleus, incus, stapes - Ear osicles |
| 4. | Hyoid, zygomatic, sphenoid - Skull bones |
Subtopic: Appendicular Skeleton: Girdle |
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Select the correct statement with respect to disorders of muscles in humans.
| 1. | Failure of neuromuscular transmission in myasthenia gravis can prevent normal swallowing |
| 2. | Accumulation of urea and creatine in the joints causes their inflammation |
| 3. | An overdose of vitamin D causes osteoporosis |
| 4. | Rapid contractions of skeletal muscles causes muscle dystrophy |
Subtopic: Disorders of Muscular and Skeletal System |
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A motor neuron along with the muscle fibres connected to it constitutes a:
| 1. | Neuro-muscular junction |
| 2. | Motor end plate |
| 3. | Sarcomere |
| 4. | Motor unit |
Subtopic: Muscle Contraction: Other Considerations |
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Which of the following statements are correct regarding skeletal muscle?
Choose the most appropriate answer from the options given below:
| A: | Muscle bundles are held together by collagenous connective tissue layer called fascicle. |
| B: | Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. |
| C: | Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. |
| D: | M line is considered as functional unit of contraction called sarcomere. |
| 1. | C and D only | 2. | A, B and C only |
| 3. | B and C only | 4. | A, C and D only |
Subtopic: Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere |
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Given below are two statements:
| Assertion (A): | Electrical excitability is a property of nervous tissue but not of muscular tissue. |
| Reason (R): | The ability to respond to internal and external stimuli is lacking in muscular tissue. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Muscle |
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | A single filament of tropomyosin runs close to the ‘F’ actins throughout its length. |
| Statement II: | In the resting state, a subunit of troponin masks the active binding sites for myosin on the actin filaments. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Skeletal Muscle: Myofilaments |
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Calcium released into the sarcoplasm during muscle contraction:
| 1. | binds to the actin and myosin and makes them work together. |
| 2. | breaks apart ATP to ADP and P. |
| 3. | removes the tropomyosin block. |
| 4. | causes the release of acetylcholine. |
Subtopic: Sliding Filament Theory |
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Consider the given two statements regarding the cycle of events taking place during skeletal muscle contraction:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | The myosin, hydrolysing ATP into ADP and Pi goes back to its relaxed state. |
| Statement II: | Cross bridge is broken when myosin releases ADP and Pi. |
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Sliding Filament Theory | Energy for Muscle Contraction |
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | First seven pairs of the ribs are called true ribs and are attached to the thoracic vertebrae and ventrally connected to the sternum with the help of elastic cartilage. |
| Statement II: | The 8th, 9th and 10th pairs are false ribs and join the seventh rib with the help of elastic cartilage. |
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Sternum & Ribs |
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