Question

Установите правильную последовательность фаз одного сердечного цикла, начиная с фазы диастолы предсердий.1) систола предсердий. Кровь выталкивается в желудочки2) кровь выталкивается в аорту и легочную артерию3) предсердия расслабляются, желудочки сокращаются4) предсердия в фазе диастолы заполняются кровью5) клапаны аорты и легочной артерии закрыты. Желудочки в фазе диастолы

Answer 1

Если не ошибаюсь, то так ----41532

Answer 2

Correct Sequence of Phases in One Cardiac Cycle, Starting with Atrial Diastole

The correct sequence of phases in one cardiac cycle, starting with atrial diastole, is as follows:

1. Atrial diastole: During this phase, the atria are relaxed and filling with blood. The atrioventricular (AV) valves, which separate the atria from the ventricles, are open, allowing blood to flow from the atria into the ventricles.

2. Atrial systole: In this phase, the atria contract, pushing the remaining blood into the ventricles. This completes the filling of the ventricles.

3. Ventricular systole: The ventricles contract during this phase, causing the AV valves to close. This prevents blood from flowing back into the atria. The pressure in the ventricles increases, leading to the opening of the semilunar valves.

4. Blood ejection: As the semilunar valves open, blood is ejected from the ventricles into the aorta and pulmonary artery. The left ventricle pumps oxygenated blood into the aorta, while the right ventricle pumps deoxygenated blood into the pulmonary artery.

5. Ventricular diastole: In this phase, the ventricles relax, and the semilunar valves close to prevent blood from flowing back into the ventricles. The atria continue to fill with blood, preparing for the next cardiac cycle.

It's important to note that the cardiac cycle is a continuous process, and these phases occur in a coordinated manner to ensure efficient blood circulation throughout the body.