The human heart is a conical-shaped muscular organ located in the chest that pumps blood through the blood vessels using rhythmic contractions and relaxations. It has four chambers - two upper atria and two lower ventricles - separated by valves that ensure blood flows in only one direction. The heart's main function is to pump deoxygenated blood to the lungs and oxygenated blood throughout the rest of the body to supply all organs and tissues with nutrients and oxygen. Common heart diseases include coronary heart disease, high blood pressure, heart attacks, and ischemic heart disease, which can often be managed through lifestyle changes like diet and exercise or medical treatment if needed.

1. THE HUMAN HEART
Presented by SK

2. HEART:
• Heart is a pumping organ that keeps the blood continuously
moving in the blood vessels.
• It is a blunt conical organ of about 12cm long and 9 cm broad.
• Its narrow apex is pointed downward and to the left.
• Heart is enclosed in a doubled walled sac, called pericardium.

3. HOW THE HEART BEATS:
• Before each beat, your heart fills with blood.
• The heart muscle then contracts.
• When it contracts it squeezes along the blood

4. THE HEART’S JOB:
• To pump blood throughout your body.
• It does this by:
• Pumping deoxygenated blood from your body to your lungs,
• Pumping oxygenated blood to from your lungs to your body

5. LOCATION OF HEART:
• Our heart is located in the front of our chest. It sits slightly
behind and to the left of our sternum (breastbone). Our
ribcage protects our heart.

6. LAYERS OF HEART WALL:
• Three layers of tissue form the heart wall.
• The outer layer of the heart wall is the epicardium,
• the middle layer is the myocardium,
• and the inner layer is the endocardium.

7. STRUCTURE OF HEART:
• The heart is made up of four chambers: The two upper chambers
are known as the left atrium and right atrium and two lower
chambers called the left and right ventricles.
• It is also made up of four valves: the tricuspid, pulmonary, mitral
and aortic valves.

8. CHAMBERS OF HEART
• The two atria are thin-walled chambers that receive blood from the veins.
• The two ventricles are thick-walled chambers that forcefully pump blood out of the heart.
• Ventricles have thick walled than atria because ventricles have to pump out the blood
with force to the different parts of the body.
• Left ventricles are far thicker walled than right ventricles as it is pumping the blood to
different parts of the body a right ventricle is only up to lungs

9. VALVES OF HEART:
• The right auricle and right ventricle guarded by tricuspid valves.
• The left atrium and left ventricle are guarded by bicuspid (Mitral) valve.
• The valve between the right ventricle and pulmonary trunk is the pulmonary semilunar
valve.
• The valve between the left ventricle and the aorta is the aortic semilunar valve.
• Valves allows only unidirectional flow of blood.

10. FLOW OF BLOOD:
• From right atrium the deoxygenated blood enters the right ventricle
through tricuspid valves.
• From right ventricle the deoxygenated bloods pumped out through
pulmonary artery to lungs for oxygenation.
• Oxygenated blood from left atrium enters the left ventricles through
bicuspid valve.
• From left ventricle, the oxygenated blood is pumped out into aorta.
• Aorta is the largest artery which takes the blood to the body.

11. LUB-DUB SOUND OF HEART:
• A healthy heart makes a lub-dub sound with each beat.
• The first sound (the lub) happens when the mitral and tricuspid
valves close.
• The next sound (the dub) happens when the aortic and
pulmonary valves close after the blood has been squeezed out
of the heart

12. FUNCTIONS OF HEART:
• It pumps blood throughout your body, controls your heart rate and maintains blood
pressure.
• Your heart is a bit like a house. It has walls, rooms, doors, plumbing and an electrical
system.
• All the parts of your heart work together to keep blood flowing and send nutrients to your
other organs.

13. FACTS ABOUT THE HEART:
• Heart is really a muscle.
• Heart Beats between 60 to 100 times per minute
• Heart beats 1,00,000 times a day
• 35 million beats in year
• 2.5 billion approx. in life-time
• Moves 2,000 gallons of blood each day.
• FUNNY BUT TRUE:-
More than studies or biological processes Heart is
Involved in LOVE talks..

14. DISEASES OF THE HEART:
• Coronary Heart Disease, also known as CHD, is the most common of
all the heart-related problems. It’s caused by your arteries getting
smaller which leads to your heart not getting enough blood supply.
High blood pressure High blood pressure, also known as
hypertension, is a common thing that effects about 50 millions
Americans and countless others worldwide. Once again, it’s generally
caused by fatty foods. The best thing to do is try to avoid stressful
situations as often as possible.

15. CONTINUED:
• A heart attack is victim are usually elderly or people the intake of
greasy , fatty foods and don’t exercise.
• Also, people that are understand stress may get heart attack.
• Ischemic heart disease Ischemic heart disease is the opposite of
hypertension, in that it is the reduced flow of blood to the heart.
• The main symptom involved with ischemic heart disease is the
concurrent feeling of chest pain, especially pain in the left side of the
chest (around the heart)

16. TREATMENT OPTION:
• Better diet for Heart Health
• Exercise
• Change Lifestyle
• Heart Disease Medications
• Medical procedures or surgery
• Heart defect patients can have a heart transplant
if there is no other option.

17. THANKS FOR YOUR ATTENTION