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Dr. Tiffany N. Lee, BS, DC, FASA
Seminar Outline
 Structure of the Heart
 Blood Flow Through the Heart
 Coronary circulation
 Conduction System of the Heart
 Blood vessels
 Hepatic Portal Circulation
 Fetal Circulation
 Blood Pressure
Structure of the Heart
 Heart
Chambers
 Atria
 Receiving
chambers
 Ventricles
 Discharging
chambers
Structure of the Heart
 Heart Valves
 Atrioventricular valves


Tricuspid valve
Bicuspid Valve
 Semilunar valves
 Pulmonary valve
 Aortic Valve
Structure of the Heart
 Heart Coverings
 Pericardium


Parietal pericardium
Visceral Pericardium,
also known as the
Epicardium
Blood Flow Through the Heart
•Right Atrium
•Right Ventricle
•Lungs
•Left Atrium
•Left Ventricle
•Body
Coronary Circulation
 Coronary
Arteries
 Coronary
Veins
 Coronary
Sinus
Case Study
 You hear that a friend has blocked coronary arteries.
What are the possible causes? What could result if the
condition is not treated? How can a coronary blockage
be treated?
Conduction System of the Heart
 SA (sinoatrial) node

Also called the pacemaker
 AV (atrioventricular) node
 AV bundle (bundle of His)
 Purkinje fibers
 P-wave

Depolarization of atria
 QRS complex

Depolarization of ventricles
 T-wave

Repolarization of ventricles
Blood Vessels
 Major arteries
 Aorta, carotid, etc.
 Arterioles
 Capillaries
 Venules
 Major veins
 Superior and Inferior
vena cavae
Hepatic Portal Circulation
 Many abdominal organs
participate in this
circulation
 This circulation is
important for:
 Excess glucose storage
 Removal of toxins from
blood
Fetal Circulation
 Placenta
 Umbilical Vein
 Ductus Venosus
 Fetal Heart
 Foramen Ovale
 Ductus Arteriosus
 Umbilical Arteries
Factor Influencing Blood Pressure
 Blood volume
 Strength of heart contractions
 Heart rate
 Blood viscosity
 Resistance to blood flow
Case Study
 Suppose an individual was injured in an automobile
accident and his right arm was seriously damaged with
copious blood loss. His blood pressure steadily
dropped to dangerous levels. Explain how the loss of
blood will reduce the blood pressure reading.