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.
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If you want to study and do well look over everything you did within the unit and have someone quiz you on some questions.
Answer:
Ok so i think i got your awnser
Explanation:
After looking around online we should cover what the lung disease is real quick: So this disease can affect the respiratory function, or the ability to breathe, and there are different types of this diseases, some are caused by bacterial infections and some are viral.
After looking around some more I found a little something too, it might be a little off topic though.
So there was an Vaping lung illness in 2019 - 2020. It started with people being users of illegal unregulated (black market) vaping products.
The first identified cases were in Illinois and Wisconsin in April 2019.
Heres a little something too: "Outbreak of lung disease, including 5 deaths, tied to e-cigarettes. Government agencies can't say whether everyone has the same disease or just similar symptoms."
Theres also 450 cases of severe lung injury, mostly in teens and adults in the United States.
You got this! :>
