(a) Actin and Myosin
|
Actin |
Myosin |
|
1 |
Actin is a thin contractile protein. |
1 |
Myosin is a thick contractile protein. |
|
2. |
It is present in light bands and is called an isotropic band. |
2 |
It is present in dark bands and is called an anisotropic band. |
|
Actin |
Myosin |
|
1 |
Actin is a thin contractile protein. |
1 |
Myosin is a thick contractile protein. |
|
2. |
It is present in light bands and is called an isotropic band. |
2 |
It is present in dark bands and is called an anisotropic band. |
(b) Red and White muscles
|
Red muscle fibre |
White muscle fibre |
|
1 |
Red muscle fibres are thin and smaller in size. |
1 |
White muscle fibres are thick and larger in size. |
|
2 |
They are red in colour as they contain large amounts of myoglobin. |
2 |
They are white in colour as they contain small amounts of myoglobin |
|
3 |
They contain numerous mitochondria. |
3 |
They contain less number of mitochondria. |
|
4 |
They carry out slow and sustained contractions for a long period. |
4 |
They carry out fast work for short duration. |
|
5 |
They provide energy by aerobic respiration. |
5 |
They provide energy by anaerobic respiration.
|
(c) Pectoral and Pelvic girdle
|
Pectoral girdle |
Pelvic girdle |
|
1 |
It is a skeletal support from where the forelimbs of vertebrates are attached. |
1 |
It is a skeletal support form where the hind limbs of vertebrates are attached. |
|
2 |
It is composed of two Bones namely, clavicle or collar bones and scapula or shoulder bone. |
2 |
It is composed of three bones, upper ileum, inner pubic, and ischium. |
