lt;question>When is the first heart sound heard?

17.<question>When is the first heart sound heard?

<variant>at the moment of contraction of the ventricles when the atrio-ventricular valves close✔️

<variant>at the moment when the pulmonary and aortic semilunar valves close

<variant>when the blood is passing from the atria into the ventricles

<variant>over all the portions of the heart and over the large vessels

<variant> over the aorta and the pulmonary artery

18.<question>Passage, breathe, flow, decrease, depth

<variant>өту, тыныс алу,ағын,төмендету, тереңдік ✔️

<variant>тыныс алу,ағын, төмендету,тереңдік, өту

<variant>өту, ағын, тереңдік, тыныс алу, төмендету

<variant>тереңдік, ағын,төмендету,өту, тыныс алу

<variant>ағын,төмендету, тереңдік, өту, тыныс алы

19.<question>The left lung has … lobes

<variant>two✔️

<variant>three

<variant>six

<variant>four

< <variant>seven

20.<question>What is the cardiac cycle composed of?

<variant>The cardiac cycle composed of the atria and the ventricles✔️

<variant>The cardiac cycle composed of the diastole of the ventricles

<variant> The cardiac cycle composed of the systole of the atria

<variant> The cardiac cycle composed of the diastole of the atria

<variant> The cardiac cycle composed of the systole of the ventricles

21.<question>The ear is the sense organ of …

<variant>hearing>✔️

<variant>vision

<variant>smelling

<variant>feeling

<variant>tasting

22.<question>The stimuli from different parts of the human body come to the brain through …

<variant>the nerve fibers in the spinal cord✔️

<variant>the blood vessels

<variant> a nervous tissue

<variant> a muscular tissue

<variant> a fluid tissue