2.eggs, fish, peanuts, almonds, milk
Myofibrils are bundles of contractile filaments which are arranged in parallel groups in thecytoplasm of striated muscle cells.
The statement that myofibrils do the actual movement during exercise is true. because the main function of the myofibril is to perform muscle contraction, and muscle contractions are the actual movements of the muscles.
The answer is True, you don't want the blood to go the opposite way<span />
Explanation:
The heart has four chambers: two atria and two ventricles.
The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.
The right ventricle pumps the oxygen-poor blood to the lungs.
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
