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Q. No.Which one of the following is the correct matching of three items and their grouping category?
Items
Group
1.
Malleus, incus cochlea
Ear ossicles
2.
Ilium, ischium, pubis
Coxal bones of pelvic girdle
3.
Actin, myosin rhodopsin
Muscle proteins
4.
Cytosine, uracil thiamine
pyrimidines
Subtopic: Appendicular Skeleton: Girdle |
79%
From NCERT
AIPMT - 2009
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Elbow joint is an example of:
1. Pivot joint
2. Hinge joint
3. Glinding joint
4. ball and socket joint
Subtopic: Fibrous & Catilaginous Joints | Synovial Joint |
78%
From NCERT
AIPMT - 2009
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The H-zone in the skeletal muscle fibre is due to:
| 1. | The central gap between myosin filaments in the A-band. |
| 2. | The central gap between actin filaments extends through myosin filaments in the A-band. |
| 3. | Extension of myosin filaments in the central portion of the A-band |
| 4. | The absence of myofibrils in the central portion of the A-band. |
Subtopic: Skeletal Muscle: Sarcomere |
60%
From NCERT
AIPMT - 2013
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Stimulation of a muscle fiber by a motor neuron occurs at:
1. the neuromuscular junction
2. the transverse tubules
3. the myofibril
4. the sarcoplasmic reticulum
Subtopic: Muscle Contraction: Other Considerations |
92%
From NCERT
AIPMT - 2014
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The characteristics and an example of a synovial joint in humans are:
| Characteristics | Examples | |
| 1. | Fluid-filled between two joints, provides cushion | Skull Bones |
| 2. | Lymph filled between two bones, limited motion | Gliding joint between carpals |
| 3. | Fluid-filled synovial cavity between two bones | Joint between atlas and axis |
| 4. | Fluid cartilage between two bones, limited motion | Knee joint |
Subtopic: Synovial Joint |
76%
From NCERT
AIPMT - 2013
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Glenoid cavity articulates:
| 1. | clavicle with acromion | 2. | scapula with acromion |
| 3. | clavicle with scapula | 4. | humerus with scapula |
Subtopic: Appendicular Skeleton: Girdle |
64%
From NCERT
NEET - 2015
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Which of the following joints would allow no movement?
1. Fibrous joint
2. Cartilaginous joint
3. Synovial joint
4. Ball and socket joint
Subtopic: Fibrous & Catilaginous Joints |
88%
From NCERT
NEET - 2015
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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 |
86%
From NCERT
NEET - 2018
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Osteoporosis, an age-related disease of skeletal system, may occur due to:
| 1. | junction leading to fatigue |
| 2. | high concentration of ca++ and Na+ |
| 3. | decreased level of oestrogen |
| 4. | accumulation of uric acid leading to inflammation of joints |
Subtopic: Disorders of Muscular and Skeletal System |
92%
From NCERT
NEET - 2016
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Which of the following hormones can play a significant role in osteoporosis?
| 1. | Aldosterone and Prolactin |
| 2. | Progesterone and Aldosterone |
| 3. | Estrogen and Parathyroid hormone |
| 4. | Parathyroid hormone and Prolactin |
Subtopic: Disorders of Muscular and Skeletal System |
89%
From NCERT
NEET - 2018
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