In a skeletal muscle, ATP:
1. is required for the dissociation of myosin from actin
2. is hydrolyzed by the ATPase in actin myofilament
3. is used to replenish cretine phosphokinase
4. is not used in breaking of cross bridges

Subtopic:  Energy for Muscle Contraction |
 58%
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NEET 2025 - Target Batch
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Identify the muscle protein that is/are regulatory in nature and are not directly involved in the act of contraction in a skeletal muscle:
1. Troponin and Calmodulin
2. Myosin
3. G Actin and F actin
4. Troponin and tropomyosin

Subtopic:  Sliding Filament Theory |
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NEET 2025 - Target Batch
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Identify the correct statement regarding the excitation-contraction coupling with respect to skeletal muscle contraction:
1. It follows the formation of cross-bridges.
2. It Is the transmission of an impulse from the primary motor area to the anterior motor neuron in the spinal cord.
3. It causes reuptake of calcium by sarcoplasmic reticulum.
4. It describes what happens in a muscle fiber between stimulation by acetylcholine and cross-bridge formation.

Subtopic:  Excitation Contraction Coupling I |
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Exposure to Sarin, a nerve gas will cause all the following except:

1. Failure to release acetylcholine at the neuromuscular junction

2. Prolonged depolarization of the motor end plate

3. Paralysis eventually leading to death

4. Inability to break down acetylcholine

Subtopic:  Energy for Muscle Contraction |
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NEET 2025 - Target Batch
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Identify the correct statement regarding the type I fibers:
1. They have fewer mitochondria than type II fibers
2. Type I fibers fatigue faster than type II fibers
3. Type I fibers store more glycogen than type II fibers
4. Type I fibers have a smaller diameter than the type II fibers.

Subtopic:  Muscle Contraction: Other Considerations |
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Identify the correct statement regarding the comparison of skeletal and smooth muscle:
1. Nervous stimulation of smooth muscle is always excitatory, whereas nervous stimulation of skeletal muscle may be excitatory or inhibitory.
2. The contractile activity of smooth muscle may be affected by hormones, whereas the contractile activity of the skeletal muscle is not.
3. Both ANS and somatic neural systems innervate smooth muscle, whereas skeletal muscle may be innervated by the somatic motor system only.
4. The calcium-binding protein in smooth muscle is troponin whereas in skeletal muscle, it is tropomyosin.

Subtopic:  Skeletal Muscle: Basic Anatomy |
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What type of bone is patella?
1. membranous
2. flat
3. sesamoid
4. horizontal

Subtopic:  Appendicular Skeleton |
 88%
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What type of cartilage is the articular cartilage?
1. hyaline
2. fibrous
3. elastic
4. calcified

Subtopic:  Fibrous & Catilaginous Joints |
 68%
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Spongy bone is also called as:
1. cancellous
2. compact
3. horizontal
4. long

Subtopic:  Axial Skeleton: I |
 64%
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The vitamin required for collagen synthesis that holds teeth in their sockets is the vitamin:

1. A

2. B

3. C

4. D

Subtopic:  Axial Skeleton: II |
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