Answer:
a. QRS
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.
The QRS complex represents the time necessary for the impulse to travel through the bundle of His, the bundle branches, and the Purkinje fibers to complete ventricular activation or contraction, known as ventricular depolarization. QRS is simply a combination of the Q-wave, R-wave and the S-wave which represents electrical impulses.
Answer:
Heat cramps are caused due to loss of nutrients when sweating and dehydration.
Explanation:
In order to treat heat cramps you should stretch the muscles that are hurting, drink lots of water to rehydrate, rest, and cool the body.
<span>The question is asking us to mention the name of the organ shed off during the menstrual cycle. Specifically, it says, once a female reaches puberty, the uterus sheds an unfertilized egg along with the.... uterine wall - that is the correct answer. The Uterine wall is how the female body prepares for pregnancies, and it is there to protect and nurture the child - so if the pregnancy does not occur, it is shed.</span>
