Matching between Column I and corresponding definition or function in column II ( please answer all of them ) : Ans Column I Column II Ca binds to calmodulin 1. Binds calcium in skeletal muscle cells Ca binds to troponin 2. Occurs in smooth muscles only Type II muscle fibers 3. Is the primary source of Ca that drives muscle contraction Troponin 4. depend on glycolysis as a source of energy H zone 5. Anchors thin filaments together Z line 6. sheath of connective tissue surrounds a bundle of muscle fibres Sarcomere 7. The region of thick filaments that has no overlap with thin filaments Actin and myosin 8. Is the functional unit of skeletal muscle Perimysium 9. Occurs in skeletal and cardiac muscles Sarcoplasmic reticulum 10. Generate the mechanical force of a muscle through crossbridge cycling
Matching between Column I and corresponding definition or function in column II ( please answer all of them ) :
|
Ans |
Column I |
Column II |
|
|
Ca binds to calmodulin |
1. Binds calcium in skeletal muscle cells |
|
|
Ca binds to troponin |
2. Occurs in smooth muscles only |
|
|
Type II muscle fibers |
3. Is the primary source of Ca that drives muscle contraction |
|
|
Troponin |
4. depend on glycolysis as a source of energy |
|
|
H zone |
5. Anchors thin filaments together |
|
|
Z line |
6. sheath of connective tissue surrounds a bundle of muscle fibres |
|
|
Sarcomere |
7. The region of thick filaments that has no overlap with thin filaments |
|
|
Actin and myosin |
8. Is the functional unit of skeletal muscle |
|
|
Perimysium |
9. Occurs in skeletal and cardiac muscles |
|
|
Sarcoplasmic reticulum |
10. Generate the mechanical force of a muscle through crossbridge cycling |
Muscles are soft tissues present in most of the animals. They play an important role in the motion and action of body parts. The calcium ions and protein filaments like myosin and actin play a key role in the contraction and relaxation in muscles.
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