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.
If the cell membrane did not allow nutrients to pass through, the nucleus would be unable to send out instructions. Additionally, the mitochondria is the powerhouse of the cell.
The practice of healthy communication includes maintaining physical contact, making eye contact, and smiling.
<h3>What is healthy communication?</h3>
The effective exchange of thoughts and feelings between people is defined as healthy communication.
It is common for people to take turns speaking and listening. When you engage in healthy communication, the people involved should be completely committed to the exchange.
The practice of healthy communication includes maintaining physical contact, making eye contact, and smiling.
Thus, the correct options are a, b, and d.
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Answer:
D.nose
Explanation:
Logic comes handy here you breathe by your nose
You inhale and outhale there
Hope I helped
Answer:should be 4 or 1
Explanation:it’s on the wrist and neck
