Answer:
a human and appropriate body part is head, neck, back, hips
Explanation:
Answer:
B) The "lub-dub" sound originates from blood turbulence through the heart.
Explanation:
The systole and diastole in the heart produce the lub and dub sound in the heart.
The systole represents the contraction of both left and right ventricles and pumps the blood to the body and the right ventricle to the lungs. This involves the opening and closing of the valves. The closing of the atrioventricular valves produces lub sound.
At the end of the systole or ventricular contraction or when the blood has been pumped to the aorta and the pulmonary valves then the semilunar valves present in the aorta and pulmonary closes. This produces a sound dub.
Therefore,lub dub is associated with the physical contraction of the heart but not the turbulence of the blood.
Thus, the selected option is the correct answer.
You are lactose intolerant so you cannot digest dairy
Answer: Yes
Explanation:
This is because the study of genetics help to reveal the duplicating of DNA and why people behave the way they are through the traits the acquire from ancestry.
Studying the genetic ancestry of humans reveal why some people are at higher risk or prone to some particular diseases because of what has been passed to them and also finding genes related to certain diseases will help to create new drugs and therapies.
