For more videos please visit: http://www.meritnation.com Have you heard your heart beat? What is the sound like? Yes, it sounds like ‘lubb-dubb’, ‘lubb-dubb’! This sound is produced when the heart produces a pressure when it beats. Now, what causes the beating of the heart? The sequence of events that take place during a single heart beat is known as the Cardiac Cycle. It is not so simple. It is a complex process which involves a sequence of activities and that too within 0.8 sec. The cardiac cycle consists of a systole and a diastole. The cardiac cycle begins with a joint diastole (relaxation of all four chambers of the heart). This is followed by an arterial systole (contraction of left and right atria) stimulated by the generation of an action potential by the Sino-Auricular Node (SA node). As a result of the arterial systole, the blood from the atria drains into the ventricles. The impulse produced by the SA Node is then picked up by the Atrio-Ventricular Node (AV node) and is conducted throughout the ventricles leading to the ventricular systole. During the ventricular systole, the blood from the ventricles is drained into the aorta and the pulmonary artery. This is followed by closing of the AV valves which produces the sound ‘lubb’ and the closure of the Semilunar valves causes produces the sound ‘dub’. How your heart works – Know your cardiac cycle and blood flow in heart.

How your heart works – Cardiac Cycle
- Post author:
- Post published:May 24, 2021
- Post category:Uncategorized
- Post comments:0 Comments
You Might Also Like

Semen Analysis

Ondansetron (Zofran) Nursing Pharmacology Considerations

Crunches-7

Healthy Pregnancy Diet | Parents

Should I take BCAA’s? or Branch Chain Amino Acid Supplements???

BEST Tricep Exercise for MASS – Close Grip Tricep Press

How to warm up before exercise

Lat Pull Down-8

Medication Safety for Kids

Tennis Video – 4

SEATED ROW MACHINE for BACK! (Hindi / Punjabi)

Over the Counter Medicines – What You Need To Know

MECHANISM OF HORMONE ACTION

Exercise vs Diet

11 Athletic LEG Exercises for Explosiveness and Definition

Branches Of Medicine Video -4

Free T3, Free T4, Reverse T3

Body Building – Biceps Exercise Guide – Preacher Hammer Curls

Seated CONCENTRATION CURLS for BICEPS! (Hindi / Punjabi)

Reported HGH Use Up Among Teens: What Are the Risks?

Blood Pressure Explained

Endocrine System Chart – Quiz

Overhead Press Dumbbells-9

Sports Physiotherapy Video – 4

Semen Meaning

What is LACTATION? What does LACTATION mean? LACTATION meaning – How to pronounce LACTATION?

Dermatology Video – 2

Fertility Supplement – Fertilica L Arginine

Bicep Exercise: Preacher Curls (Barbell and Dumbbell)

Lower Leg Muscle Group – Kinesiology Quiz

What’s happening in my uterus?!

Antioxidants

PHA – Echocardiogram

What is DISEASE? What does DISEASE mean? DISEASE meaning, definition, explanation & pronunciation

Tennis Video – 1
Shrugs-12

Heart attack in 3d animation

Male hormones

Human Body, Body Building Muscle Building Anatomy Physiology Video – 43

See What Happens To Your Body When You Start Taking Fish Oil Everyday

Why is Protein Important for the Human Body?
