Types of contraction

Muscular contraction
1. Muscular fiber contraction takes 2 ms
  1. The latency period is the drawback of electric impulses
Muscular relaxation
1. In order to stop contractions, action potentials musn't be produced
ATP is needed both for muscular contraction and relaxation
1. Calcium is needed to contract the muscles
  1. When contraction is no longer needed, calcium pumps return calcium to the sarcoplasm
2. 1 ATP= 8 muscular contractions
  1. Phosphocreatine is used after ATP is consumed
    1. Phosphocreatine is found mostly in meat
3. Carbohydrates are more efficient in ATP conversion
  1. Krebs cycle= 30 ATP
Skeletic muscle contraction
1. Spasmodic contraction
  1. Muscle is stimulated with an electric shock, contraction and relaxation occur rapidly
2. Graduated contraction
  1. Stimulation of fibers
    1. Strenght will vary depending on number of fibers that were stimulated

Resource summary

	Created by migsg about 9 years ago