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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Select the correct statement with respect to locomotion in humans:

1. Accumulation of uric crystals in joints causes inflammation
2. The vertebral column has 10 thoracic vertebrae
3. The joint between adjacent vertebrae is a fibrous joint 
4. The decreased level of progesterone causes osteoporosis in old people

Subtopic:  Disorders of Muscular and Skeletal System |
 82%
From NCERT
AIPMT - 2013
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Low Ca2+ in the body fluid may be the cause of:

1. tetany

2. anaemia

3. angina pectoris

4. gout

Subtopic:  Disorders of Muscular and Skeletal System |
 92%
From NCERT
AIPMT - 2010
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The length of which of the following regions shown in the given diagram of a sarcomere remains unchanged during muscle contraction?

   

1. 1

2. 2

3. 7

4. 6

Subtopic:  Skeletal Muscle: Sarcomere |
 69%
From NCERT
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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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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 |
 77%
From NCERT
AIPMT - 2009
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Which of the following disorders is an outcome of irregularities in the metabolism of the nitrogenous waste?

1. Osteoporosis

2. Gouty arthritis

3. Osteoarthritis

4. Rheumatoid arthritis

Subtopic:  Disorders of Muscular and Skeletal System |
 77%
From NCERT
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Consider the following statements with two blanks X and Y and select the option which correctly fills up these blanks.
In the center of the intervertebral disc, a soft area is present called ....X.... , which is supposed to be a remnant of ....Y........ .

1. X-Nucleus pulposus, Y-Nerve cord

2. X-Centrum, Y-Noto cord

3. X-Nucleus pulposus, Y-Noto cord

4. X- Centrum, Y-Nerve cord

Subtopic:  Vertebral column | Axial Skeleton |
 50%
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Total number of bones in the hind limb of a man is:

1. 14

2. 21

3. 24

4. 30

Subtopic:  Appendicular Skeleton |
 81%
From NCERT
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The functional unit of contractile system in striated muscle is:

1. cross-bridge 2. myofibril
3. sarcomere 4. Z-band
Subtopic:  Skeletal Muscle: Sarcomere |
 87%
From NCERT
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