Types of voluntary muscle fibres

Red muscle also called as?

Slow muscle

Why is it called red muscle?

Myoglobin content is high

Red muscle wrt sarcoplasmic reticulum

Its less extensive so contractions are less powerful

Less ca++

Red muscle wrt blood vessel

Its more extensive due to more mitochondria

Fatigue occurs slowly

Response time for red muscle?

Slow response with long latent period,

Red muscle is involved in what activity?

Prolonged activity thats continous

Respiration in red muscles?

Depends on aerobic respiration for ATP

Example for red muscle?

Extensor muscle in back

Well developed leg muscle of marathon runners

white muscle is also called as?

Twitch muscle or fast muscle

Why is it called white muscle

Myoglobin is less so its pale looking

White muscle wrt sarcoplasmic reticulum

Sarcoplasmic reticulum is more extensive so contractions are more powerful

More ca++

White muscle wrt blood vessels

Bloos vessels are less extensive due to less mitochondria

So fatigue occurs easily

White muscle wrt response

Fast/rapid response with short latent period

White muscle wrt activity

Not involved in prolonged and continued activity

Relaxes immediately

White muscle wrt respiration

It depends on anaerobic process for ATP

Example for White muscle

Oculomotor muscle (controls eye movement)

Legs of sprinter