Locomotion and Movement
- The cells of human body exhibit amoeboid, ciliary, and muscular types of movements.
- Amoeboid movement – Example: leucocytes present in the blood
- Ciliary movement – Example: passage of ova through fallopian tube
- Muscular movement – Example: movement of limbs, jaws, and tongue
- Based on location, muscles are of three types;
- Skeletal muscles/striated muscles – Voluntary in nature
- Visceral muscles/smooth muscles – Involuntary in nature
- Cardiac muscles – Involuntary in nature
- Myofibril is one of the several contractile filaments that make up a striated muscle fibre.
- Sarcomere is a part of myofibril.
- Sarcomere composed of two contractile proteins:
- Actin – Thin filament and called I band
- Myosin – Thick filament and called A band
- Z line bisects the centre of each I band.
- The functional unit of contraction between two success…
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