Answer:
the anwswer is b. False
the main cause is Opioids
1. Sexual intercourse
2. stuck with infected needles/sharps
3. sharing needles
4. transfusion of infected blood
5. transplantation of infected organs
A, C, D i believe are the answers...
During contraction, the filaments slide past he thick filaments, shortening the sarcomere. The thick and thin filaments do the actual work of a muscle, and the way they do this is pretty cool. Thick filaments are made of a protein called myosin. At the molecular level, a thick filament is a shaft of myosin molecules arranged in a cylinder. Thin filaments are made of another protein called actin. The thin filaments look like two strands of pearls twisted around each other.