The H-Zone in the skeletal muscle fibre is due to 

(1) the central gap between actin filaments extending through myosin filaments in the A-band

(2) extension of myosin filaments in the central portion of the A-band

(3) the absence of myofibrils in the central portion of A-band

(4) the central gap between myosin filaments in the A-band

Subtopic:  Skeletal Muscle: Sarcomere |
 62%
From NCERT
AIIMS - 2016
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An example of stretch reflex triggered by passive muscle movement is the

(1) tendon reflex               

(2) ipsilateral reflex

(3) flexor reflex         

(4) patellar reflex

Subtopic:  Muscle Contraction: Other Considerations |
AIIMS - 2017
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Gerdy fibres are 

(1) ligament of neck       

(2) ligament of ankles

(3) ligament of palm       

(4) ligament of face.

Subtopic:  Muscle Contraction: Other Considerations |
AIIMS - 2017
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Achondroplasia is a disease related with the defect in the formation of 

1. membrane

2. cartilage

3. mucosa

4. none of these

Subtopic:  Disorders of Muscular and Skeletal System |
 71%
AIIMS - 2017
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Consider the diagram given below.

Parts labelled as A, B, C, D, E and F respectively indicate.

(1) Sacrum, ilium, pubis, femur, tibia and fibula

(2) Ilium, pubis, sacrum, femur, fibula and tibia

(3) Sacrum, pubis, ilium, femur, tibia and fibula

(4) Ilium, sacrum, pubis, femur, tibia and fibula

Subtopic:  Number of Bone in Appendicular Skeleton |
 57%
From NCERT
AIIMS - 2016
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In old age, stiffness of joints is due to the 

(1) hardening of bones

(2) inefficiency of muscles

(3) decrease in synovial fluid

(4) enlargement of bones

Subtopic:  Synovial Joint |
 86%
AIIMS - 2015
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Oxygen content reduction makes the glycolyse (glycogenesis) intensity increased due to

(1) increase of ADP concentration in cell

(2) increase of NAD+ concentration in cell

(3) increase of ATP concentration in cell

(4) increase of concentration of peroxides and free radicals 

Subtopic:  Energy for Muscle Contraction |
AIIMS - 2010
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Pick out the correct match

(1) Sternum       - 14

(2) Pelvis           - 3

(3) Ribs             - 20

(4) Face            - 5

Subtopic:  Appendicular Skeleton: Girdle |
 74%
From NCERT
AIIMS - 2009
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Match Column-I with Column-II:

Column-I Column-II
A.   Structural and functional unit of a myofibril
B.   Protein of thin filament
C.   Protein of thick filament
D.   The central part of thick filament not overlapped by thin filament
I. H-zone
II. Myosin
III. Sarcomere
IV. Actin

(1) A - I, B - II, C - III, D - IV

(2) A - I, B - III, C - II, D - IV

(3) A - I, B - IV, C - III, D - II

(4) A - III, B - IV, C - II, D - I

Subtopic:  Skeletal Muscle: Sarcomere |
 94%
From NCERT
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Sarcomere is the area between:

(1) 2 H-zones       

(2) 2 Z-lines                  

(3) 2 M-lines                  

(4) 2 A-bands

Subtopic:  Skeletal Muscle: Sarcomere |
 88%
From NCERT
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