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.
Answer:
I feel that this is a two part answer
Explanation:
I think that most nosebleeds will stop on their own after a fashion (D) but depending on the severity of the nose bleed then they should C- seek medical attention.
Answer:
fats, carbohydrates, and proteins
Explanation:
they all give you energy and/or are nutrients and food
Answer:
Carey forgot to check the skin on the arm to make sure it was healthy.
Explanation:
just took the test
