Transcript Document
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.