SKELETAL \ STRIPED \ VOLUNATRY MUSCLE Flashcards
1
Q
What are the characteristics of its muscles fiber ?
A
Cylindrical , multinucleated (syncytial) and undergo fatigue.
2
Q
what is the location of this tissue ?
A
Most abundant muscle attach with bone through tendon.
3
Q
what are the two types of muscle fibers present in it ?
A
- White muscle fiber
2. Red muscle fiber
4
Q
What are white muscle fiber ?
A
- Myoglobin is less (anaerobic muscle)
- Mitochondria is less in number
- Sarcoplasmic reticulum is more
- Location - biceps, triceps , facial and anterior 1\3rd of oesophagus
5
Q
What are red muscle fiber ?
A
- Myoglobin is more (aerobic muscle)
- Mitochondria is more in number
- Sarcoplasmic reticulum is less
- Location - back muscle of marathon runner and flight muscle of kite.
6
Q
What are the special feature of the white muscle fiber ?
A
In the white muscle fiber shortest refractory period is there hence they undergo quicker contraction for short period.
7
Q
What is refractory period ?
A
It is the period between muscle contraction and relaxation.
