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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn example of stretch reflex triggered by passive muscle movement is the
(1) tendon reflex
(2) ipsilateral reflex
(3) flexor reflex
(4) patellar reflex
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGerdy fibres are
(1) ligament of neck
(2) ligament of ankles
(3) ligament of palm
(4) ligament of face.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConsider 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOxygen content reduction makes the glycolyse (glycogenesis) intensity increased due to
(1) increase of ADP concentration in cell
(2) increase of concentration in cell
(3) increase of ATP concentration in cell
(4) increase of concentration of peroxides and free radicals
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPick out the correct match
(1) Sternum - 14
(2) Pelvis - 3
(3) Ribs - 20
(4) Face - 5
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySarcomere is the area between:
(1) 2 H-zones
(2) 2 Z-lines
(3) 2 M-lines
(4) 2 A-bands
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLight bands (thin filaments) contain actin and are called:
(1) A-bands or Isotropic band
(2) A-bands or Anisotropic bands
(3) I-bands or Isotropic bands
(4) I-bands or Anisotropic bands
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology