Red Muscle Fibre
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Lance Armstrong is the seven time winner The Tour de France is a bicycle race which covers between 3500 to 4000 kilometers. What type of muscle fiber probably predominates in the legs of bicyclists who compete in this annual event?
Red fibers
All of the above
White fibers
Intermediate fibers
Slow twitch fibers have
Burst of power
Small diameter
More myoglobin
Fewer mitochondria
Match Column I with Column II :
Column I |
Column II |
||
(a) |
Smooth muscle |
(i) |
Myoglobin |
(b) |
Tropomyosin |
(ii) |
Thin filament |
(c) |
Red muscle |
(iii) |
Sutures |
(d) |
Skull |
(iv) |
Involuntary |
RBCs are best adapted for carrying oxygen in blood because_____________.
All the above
RBCs are biconcave, circular and have a depression in the centre increasing their surface area.
Old RBCs are destroyed everyday by the spleen and new ones are added from bone marrow.
Mature RBCs do not use the oxygen they carry
difference between myoglobin and hemoglobin?
Match the following and select the correct option.
Column – I Column – ll
A. Fast muscle fibers (i) Myoglobin
B. Slow muscle fibers (ii) Lactic acid
C. Actin filament (iii) Contractile unit
D. Sarcomere (iv) l-band
A-(i) B-(ii), C-(iv), D-(iii)
A-(ii), B-(i), C-(iii), D-(iv)
A-(ii), B-(i), C-(iv), D-(iii)
A-(iii), B-(ii), C-(iv), D-(i)
1) Striated Musclei. Thick filament2) Red Muscleii. Thin filament3) Troponiniii. Voluntary4) Myosiniv. Myoglobin
- 1-ii, 2-iv, 3-i, 4-iii
- 1-iii, 2-iv, 3-i, 4-ii
- 1-iv, 2-iii, 3-i, 4-ii
- 1-iii, 2-iv, 3-ii, 4-i
Smooth muscles are______.
Involuntary, spindle shaped, uninucleate, tapering
Voluntary, multinucleate, cylindrical
Involuntary, cylindrical, multinucleate
Voluntary, branched, uninucleate
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect