Heart
Heart or (cardia = Greek), or heart (English)
is a cone-shaped organs, muscular strength and depth of
hollow. Human heart size approximately fist
hands of an adult male. Adult heart weight less
More than 300 grams. The heart is located in the chest pouch (pouch
Thorac) with a position slightly downward and slightly to the side
left. Peak heart (apex cordis) is located to the left side.
Heart awake in place because the blood vessels
heart of the heart as if hanging in the chest cavity.
Heart Anatomy Structure
Pericardium
Heart surrounded by a membrane called the pericardium.
Wrapper layer next to the attached heart was
close to the heart, whereas the outer layer of more loosely
and watering, to avoid friction between the organs in the body
which occurs because the heart pumping movement.
Cardiac muscle
To have the heart to function as an efficient pump, then otototot
heart, the cavity top and bottom of the cavity should be contracted
interchangeably. The heart has started beating at the time of the
in the womb and will never stop until
breathed his last. The heart is the organ that
The most remarkable because of the non-stop pumping blood
which contains oxygen and nutrients in the blood to the entire
body. Heart beats 100 thousand times per day or pumping
approximately 2000 gallons of blood per day.
The heart was a muscle in the body of the toughest
work, and the strongest. The heart wall is composed of 3 layers,
from within consists of:
1. Endokardium the deepest layer of the heart
the endothelial lining of blood vessels continued to
arteries and veins.
2. Myocardium is the muscular part of the heart composed
the heart muscle (myocard). Cardiac muscles are
to contract and pump blood through the arteries.
3. Epikardium called pericardium is visceralis
the most part outside the heart is composed of connective tissue.
Heart Room
The human heart is divided into 4 rooms right of the foyer
and left, and right and left chambers.
1. Between the right and left of the foyer are separated by a septum
interatrioler (wall between the foyer).
2. Between right and left chambers separated by a septum
interventrikuler (wall between chambers).
3. Between the porch left with the left chamber is limited by the valve
bikuspidalis (mitralis).
4. Between the porch right and left chambers is limited by the valve
trikuspidalis.
5. Between the left room with the aortic valve is limited by semilunaris
aortae.
6. Between the right chamber with limited pulmonary artery valve
pulmonary semilunaris.
Chambers of the heart
Chambers of the heart is the heart that have the ability
pump blood, while the porch as the recipient of blood
passively. Because of these functions, it is structurally
chambers of the heart muscle is thicker (stronger) than muscle porch.
Similarly, the muscle right and left chambers different thickness because
different tasks. left room has a thicker muscle than
muscle chamber works right for pumping blood around
body, while the right chamber pumps blood to function paruparu.
However, the right chambers have more room
greater than the left room.
Heart valve
Functioning heart valves keep blood pressure and keep
blood does not flow back into place. Valvulae mitralis
and trikuspidalis opened because of the blood coming from
Systemic venous (superior vena cava and inferior vena cava) and
pulmonary veins, closed if the chamber is contracting, but valvulae
semilunaris open and vice versa. Valvulae edge connected
by chordae tendineae to the wall of the room musculus
papillaris (m = musculus. muscles).
There are 4 pieces in the heart valves. Namely mitral, tricuspid,
aortic, and pulmonik (often also called pulmomer).
These valves serve to regulate the flow path
blood into the right direction. Each valve has a cover
called leaflets or cusps. Mitral valve has 2 pieces
leaflets, others have leaflets 3 fruit.
Right and left parts of the heart working simultaneously
create a pattern that continued on a continuous
which makes the blood will keep flowing to the heart paruparu
and other body parts.
• Blood enters the heart via 2 major veins (venous
cava) inferior and superior oxygen carrying empty
from the body toward the right side of the porch.
• When the porch contracts, blood flows from the right
foyer to the right ventricle through a valve trikuspid.53
• When the chamber is full, then the valve will be closed for triskupid
prevent blood flowing back into the Atria as
ventricular contraction.
• When the chamber is contracting, the blood will flow out through the
pulmonik valve into the arteries and lungs which in
This section will have the blood of oxygen.
- The pulmonary veins emptied of blood will have
mengandungoksigen from the lungs into the left
porch
- When the porch to contract, blood will flow into
venrikel the left side through the mitral valve.
- When full venrikel mitral valve will be closed to
prevent blood menggalir back to the porch when the ventricles
contract.
- When the ventricle contracts the blood will leave
heart through the aortic valve leading to the collapse.