Answer:
epiglottis
Explanation:
I think it is the Epiglottis that is not a component of the bronchial tree
A action that supports two récuser CPR is having the recusers switch places every 2 minutes so they can both be able to help the victims.
Answer: Ok Diastole commences with the closure of the aortic and pulmonary valves. Intraventricular pressure falls but there is very little increase in ventricular volume (isovolumetric relaxation). Once ventricular pressure falls below atrial pressure, the mitral and tricuspid valves open and ventricular filling begins.The first heart sound (S1) is produced by vibrations generated by closure of the mitral (M1) and tricuspid valves (T1). It corresponds to the end of diastole and beginning of ventricular systole and precedes the upstroke of carotid pulsation.
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Explanation:
Answer:
The correct answer will be option-B.
Explanation:
Papillary muscles are the muscle present in the ventricle of the heart to which chordae tendinae of the aortic valves gets attached.
The number of papillary muscles varies in both the ventricles as in the right ventricle, three papillary muscles are present whereas in the left ventricle two muscles.
They play an important role in the closing of the AV valves as ventricular contraction causes the chordae tendinae to contract which in turn contract the papillary muscles thereby closing the AV valve and prevent back-flow of the blood to the atria.
Thus, Option-B is the correct answer.
papillary muscles by chordae tendineae. During the relaxation phase of the cardiac cycle, the papillary muscles are also relaxed and the tension on the chordae tendineae is slight (see Figure 12b). However, as the myocardium of the ventricle contracts, so do the papillary muscles. This creates tension on the chordae tendineae (see Figure 13b), helping to hold the cusps of the atrioventricular valves in place and preventing them from being blown back into the atria.
