The answer is B because it’s the only one that makes sense with what the question is asking.
Answer:
All of the above
Explanation:
Because all of the answer choices are benefits of making a grocery list.
Answer:
Thin and Thick filament.
Explanation:
The actin and myosin are the important proteins of the muscles. These proteins shows striations of the skeletal and cardiac muscle, when observed under the microscope.
Actin protein is the major constituent of the thin filament. Thin filament is 7 nm in diameter and made of globular proteins. Myosin protein is the major constituent of the thin filament. This filament is 15 nm in diameter.
Thus, the actin comprise of thick filament and myosin comprise of thin filament.
Answer:
The semilunar valves open during the ejection phase due to the pressure on the left ventricle being higher than the pressure in the aorta and pulmonary artery.
Explanation:
During the ejection phase occurring in the ventricular systole, the pressure in the left ventricle increases and overpasses the pressure in the aorta and pulmonary artery. At this point the semilunar valves open, allowing the blood to flow from the ventricle into the arteries.
