Anatomy of Heart
Anatomy of Heart
Anatomy of Heart
The Heart
• slightly larger then a clinched fist of the self
• Conical/pyramidal shaped
hollow fibromuscular organ
• Weighing 280 to 340 gms in males,
230 to 280 gms in(female)
POSITION OF HEART
• It is physiologically separated into
a pair of muscular pumps (the
right &left parts) with valves
which work in unison to propel
blood to all parts of the body.
• 3 surfaces
• grooves or sulci
BORDERS OR MARGINS OF HEART
1. Upper border –This is atrial & formed
mainly by left atrium. Anterior to it are
ascending aorta & pulmonary trunk.
-Outflowing part
(Infundibulum) is smooth
forms upper conical part
giving rise to pulmonary
trunk-develops from bulbus
cordis.
• Interior shows 2 orifices –
atrioventricular
Right or tricuspid
orifice guarded by tricuspid
valve, pulmonary orifice
guarded by pulmonary valve
Trabeculae carneae
1. Ridges –elevations
3.Papillary muscles -
Right
3. Papillary muscles: Ventricle
•conical projections whose one end
is attached to the ventricular wall
and the other end is connected to
the cusps of the tricuspid valve by
chordae tendinae.
Valve
Chordae tendinae
Papillary muscle
THE PULMONARY
• VALVE
The pulmonary valve, guarding the outflow from
the right ventricle, surmounts the infundibulum
M- MITRAL AREA
T- TRICUSPID AREA
A- AORTIC AREA
P- PULMONARY AREA
Anterior view of the chest wall of a man showing skeletal structures, heart,
location of the heart valves, and auscultation points.
CONDUCTING SYSTEM OF HEART
Conducting System
• Sinuatrial node(SA node) -pace maker, generates
impulse, situated in the upper part of sulcus terminalis.