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Q. No.Identify A, B, C and D from the table:
Red muscle fibre
White muscle fibre
These are dark red
These are lighet in colour
Mitochondria is more in number.
Mitochondria is less in number.
A
B
These carry out mainly aerobic oxidation and can contract for a longer period without fatigue.
These carry out mainly anaerobic oxidation and can get fatigued soon.
C
D
Optons
A
B
C
D
1.
More sarcoplasmic reticulum
Less sarcoplasmic reticulum
Muscle fibres have slow rate of contraction for long periods
Muscle fibres have fast rate of contraction for long periods
2.
Less sarcoplasmic reticulum
More sarcoplasmic reticulum
Muscle fibres have slow rate of contraction for long periods
Muscle fibres have fast rate of contraction for long periods
3.
Less sarcoplasmic reticulum
More sarcoplasmic reticulum
Muscle fibres have fast rate of contraction for long periods
Muscle fibres have slow rate of contraction for long periods
4.
Less sarcoplasmic reticulum
less sarcoplasmic reticulum
Muscle fibres have fast rate of contraction for long periods
Muscle fibres have fast rate of contraction for long periods
Subtopic: Skeletal Muscle: Basic Anatomy |
64%
Level 2: 60%+
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Hints
Read the following statements and choose the correct option:
A. The extensor muscles of human back reamin in sustained contraction to maintain erect posture against gravity.
B. The extensor mucles are rich red muscle fibres with abundant mitochondria and myoglobin.
1. Statement A is correct but B incorrect.
2. Statement B correct but A incorrect.
3. Statement A is correct and B are correct but B is not hte correct explanation of A.
4. Both the statements A and B are correct but B is not the correct explanation of A.
A. The extensor muscles of human back reamin in sustained contraction to maintain erect posture against gravity.
B. The extensor mucles are rich red muscle fibres with abundant mitochondria and myoglobin.
1. Statement A is correct but B incorrect.
2. Statement B correct but A incorrect.
3. Statement A is correct and B are correct but B is not hte correct explanation of A.
4. Both the statements A and B are correct but B is not the correct explanation of A.
Subtopic: Skeletal Muscle: Basic Anatomy |
55%
Level 3: 35%-60%
Hints
Read the following statements:
i. Scapula is situated in the dorsal part of thorax between the second and the seventh ribs
ii. The striated appearance of a myofibril is due to the distribution pattern of sarcoplasmic reticulum
iii. Myosin possess oxygen storing capacity
iv. The central hollow portion of vertebra is called neural canal
v. I-band shortens during muscle contraction
How many of the above statements are incorrect?
1. Two
2. Three
3. Four
One
i. Scapula is situated in the dorsal part of thorax between the second and the seventh ribs
ii. The striated appearance of a myofibril is due to the distribution pattern of sarcoplasmic reticulum
iii. Myosin possess oxygen storing capacity
iv. The central hollow portion of vertebra is called neural canal
v. I-band shortens during muscle contraction
How many of the above statements are incorrect?
1. Two
2. Three
3. Four
One
Subtopic: Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere | Appendicular Skeleton | Appendicular Skeleton: Girdle | Axial Skeleton |
51%
Level 3: 35%-60%
Hints
Find out the true (T)/ false (F) statements and choose the correct option.
I. The most abundant skeletal muscle protein is myosin
II. The length of A-band remains unchanged during muscle contraction.
III. Ileum is a part of pelvic girdle.
IV. The biggest muscle is Gluteus maximus in the buttock and the smallest is Stapedius in the middle ear
I. The most abundant skeletal muscle protein is myosin
II. The length of A-band remains unchanged during muscle contraction.
III. Ileum is a part of pelvic girdle.
IV. The biggest muscle is Gluteus maximus in the buttock and the smallest is Stapedius in the middle ear
| Options | I | II | III | IV |
| 1. | T | T | T | T |
| 2. | T | F | T | F |
| 3. | F | T | F | T |
| 4. | T | T | F | T |
Subtopic: Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere |
Level 3: 35%-60%
Hints
Striated muscles contract because of:
1. Sliding of actin filaments on myosin filaments
2. Sliding of myosin filaments on actin filaments
3. Actin filaments sliding over another actin filament
4. Fusion of myosin filaments
1. Sliding of actin filaments on myosin filaments
2. Sliding of myosin filaments on actin filaments
3. Actin filaments sliding over another actin filament
4. Fusion of myosin filaments
Subtopic: Sliding Filament Theory |
89%
Level 1: 80%+
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Hints
Please attempt this question first.
Find out the true (T)/false (F) statements and choose the correct option:
I. The phosphagen in the vertebrate muscle is arginine phosphate
II. The accumulation of phosphoenol pyruvic acid in muscles cause fatigue
III. Cori cycle occurs in liver and muscle
IV. ATP is synthesised in the muscle by the phosphorylation of ADP by a phosphagen
I. The phosphagen in the vertebrate muscle is arginine phosphate
II. The accumulation of phosphoenol pyruvic acid in muscles cause fatigue
III. Cori cycle occurs in liver and muscle
IV. ATP is synthesised in the muscle by the phosphorylation of ADP by a phosphagen
| Options | I | II | III | IV |
| 1. | T | T | F | F |
| 2. | F | F | T | T |
| 3. | T | F | T | F |
| 4. | F | T | F | F |
Subtopic: Muscle Contraction: Other Considerations |
62%
Level 2: 60%+
Hints
Which of the following is correct?
1. Blood supply is absent in smooth muscles
2. In cardiac muscle fibres, sarcoplasmic reticulum is poorly developed in comparison to skeletal muscle fibres
3. Both (1) and (2)
4. ATPase enzyme required for muscle contraction is located in myosin and actin
1. Blood supply is absent in smooth muscles
2. In cardiac muscle fibres, sarcoplasmic reticulum is poorly developed in comparison to skeletal muscle fibres
3. Both (1) and (2)
4. ATPase enzyme required for muscle contraction is located in myosin and actin
Subtopic: Introduction to Locomotion |
Level 3: 35%-60%
Please attempt this question first.
Hints
Choose the wrong statement:
1. When muscle fibre is relaxed, passive transport of Ca2+ occurs from sarcoplasm into the sarcoplasmic reticulum
2. Hyoid bone do not articulate with other bones
3. Glenoid cavity is meant for providing articulation to the head of humerus
4. Acetabulum provides articulation to the head of femur
1. When muscle fibre is relaxed, passive transport of Ca2+ occurs from sarcoplasm into the sarcoplasmic reticulum
2. Hyoid bone do not articulate with other bones
3. Glenoid cavity is meant for providing articulation to the head of humerus
4. Acetabulum provides articulation to the head of femur
Subtopic: Energy for Muscle Contraction | Muscle Contraction: Other Considerations |
70%
Level 2: 60%+
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Hints
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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 |
59%
Level 3: 35%-60%
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Hints
Please attempt this question first.
Identify the incorrectly matched pair:
| 1. | Myasthenia gravis | An auto-immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle. |
| 2. | Muscular dystrophy | Progressive degeneration of skeletal muscle mostly due to a genetic disorder. |
| 3. | Tetany | Rapid spasms (wild contractions) in muscle due to high Ca2+ in body fluid. |
| 4. | Gout | Inflammation of joints due to accumulation of uric acid crystals. |
Subtopic: Disorders of Muscular and Skeletal System |
87%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
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