Calcium is important in skeletal muscle contraction because it:
| 1. | binds to troponin to remove the masking of active sites on actin for myosin. |
| 2. | activates the myosin ATPase by binding to it. |
| 3. | detaches the myosin head from the actin filament. |
| 4. | prevents the formation of bonds between the myosin cross bridges and the actin filament. |
Subtopic: Excitation Contraction Coupling I | Sliding Filament Theory | Muscle Contraction: Other Considerations |
87%
Level 1: 80%+
NEET - 2018
Hints
Match the following joints with the bones involved:
| Column-I | Column-II | ||
| (a) | Gliding joint | (i) | Between carpal and metacarpal of thumb |
| (b) | Hinge joint | (ii) | Between Atlas and Axis |
| (c) | Pivot joint | (iii) | Between the Carpals |
| (d) | Saddle joint | (iv) | Between Humerus and Ulna |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iv) | (i) | (ii) | (iii) |
| 3. | (iv) | (ii) | (iii) | (i) |
| 4. | (i) | (iii) | (ii) | (iv) |
Subtopic: Synovial Joint |
84%
Level 1: 80%+
NEET - 2019
Hints
Match List-I with List-II
| List-I | List-II | ||
| (a) | Scapula | (i) | Cartilaginous joints |
| (b) | Cranium | (ii) | Flat bone |
| (c) | Sternum | (iii) | Fibrous joints |
| (d) | Vertebral column | (iv) | Triangular flat bone |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (ii) | (iii) | (i) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (ii) | (iii) | (iv) | (i) |
Subtopic: Axial Skeleton: II | Appendicular Skeleton: Girdle | Fibrous & Catilaginous Joints |
81%
Level 1: 80%+
NEET - 2021
Hints
Receptor sites for neurotransmitters are present on:
| 1. | Pre-synaptic membrane | 2. | Tips of axons |
| 3. | Post-synaptic membrane | 4. | Membrane of synaptic vesicles |
Subtopic: Nervous System | Synapse |
82%
Level 1: 80%+
NEET - 2017
Hints
Myelin sheath is produced by:
| 1. | Astrocytes and Schwann cells |
| 2. | Oligodendrocytes and Osteoclasts |
| 3. | Osteoclasts and Astrocytes |
| 4. | Schwann cells and Oligodendrocytes |
Subtopic: Nervous System |
86%
Level 1: 80%+
NEET - 2017
Hints
Which part of the brain is responsible for thermoregulation?
1. Medulla oblongata
2. Cerebrum
3. Hypothalamus
4. Corpus callosum
Subtopic: Diencephalon | Cerebrum, EEG & Sleep |
89%
Level 1: 80%+
NEET - 2019
Hints
Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
| (a) Insulin | Glucagon |
| (b) Aldosterone | Atrial natriuretic factor |
| (c) Relaxin | Inhibin |
| (d) Parathormone | Calcitonin |
| 1. | a | 2. | b |
| 3. | c | 4. | d |
Subtopic: Thyroid Gland Part I | Parathyroid | Pancreas: I |
79%
Level 2: 60%+
NEET - 2016
Hints
Hypersecretion of Growth Hormone in adults does not cause further increase in height, because?
| 1. | Epiphyseal plates close after adolescence. |
| 2. | Bones lose their sensitivity to Growth Hormone in adults. |
| 3. | Muscle fibres do not grow in size after birth. |
| 4. | Growth Hormones become inactive in adults. |
Subtopic: Adenohypophysis & Hypothalamus |
69%
Level 2: 60%+
NEET - 2017
Hints
Which of the following is an amino acid derived hormone?
1. Epinephrine
2. Ecdysone
3. Estradiol
4. Estriol
1. Epinephrine
2. Ecdysone
3. Estradiol
4. Estriol
Subtopic: Mechanism of Hormone Action |
90%
Level 1: 80%+
NEET - 2018
Hints
Match the following hormones with the respective disease:
| (a) | Insulin | (i) | Addison's disease |
| (b) | Thyroxin | (ii) | Diabetes insipidus |
| (c) | Corticoids | (iii) | Acromegaly |
| (d) | Growth Hormone | (iv) | Goitre |
| (v) | Diabetes mellitus |
Select the correct option.
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (v) | (i) | (ii) | (iii) |
| 3. | (ii) | (iv) | (iii) | (i) |
| 4. | (v) | (iv) | (i) | (iii) |
Subtopic: Human Growth Hormone | Thyroid Gland Part I | Adrenal Cortex: Cortisol | Pancreas: I | Pancreas |
73%
Level 2: 60%+
NEET - 2019
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