Single Choice

Match the following and mark correct option: Column I Column II A. Fast muscle fibres (i) Myoglobin B. Slow muscle fibres (ii) Lactic acid C. Actin filament (iii) Contractile unit D. Sarcomere (iv) I-band

AA-(i), B-(ii), C- (iv), D- (iii)
BA-(ii), B-(i), C - (iii), D- (iv)
CA-(ii), B-(i), C - (iv), D- (iii)
Correct Answer
DA-(iii), B-(ii), C - (iv), D- (i)

Solution

The sarcomere is known as the ultimate unit of contraction. It is made up of actin and myosin filament.
Actin filaments are the ones that are also known as the thin filament and forms the isotropic part in the sarcomere.
Few fast muscle fibres are the ones that are present in the type of runners that runs for a short amount of time. They have high glycogen content and lactic acid contained in them because of anaerobic respiration and muscle fatigue.
Slow muscle fibre is found in those runners that need to have long and sturdy run. They have a high number of mitochondria and myoglobin because they need continuous ATP production or a large amount of time.
So, the correct option is 'A-(ii), B-(i), C - (iv), D- (iii)'


SIMILAR QUESTIONS

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Distinguish between red and white muscles.

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

The slow twitch muscle fibres which are rich in myoglobins and have abundant mitochondria are:

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

Which of the following correctly characterises a "fast-oxidative" type of skeletal muscle fibre?

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

It is known that red muscle fibres in animals can work for longer periods of time continuously. How is this possible?

Animal Physiology: Locomotion, Senses, Nervous and Chemical Coordination

State three differences between red muscle fibre and white muscle fibre.

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