1 Cardiovascular Structure and Function Pathology 2 - Dr. Gary Mumaugh Circulatory System - Heart Right heart o Pulmonary circulation - Pumps blood through the lungs Left heart o Systemic circulation - Pumps blood through the body Mediastinum Heart wall o Pericardium Parietal and visceral Pericardial cavity and fluid o Myocardium o Endocardium
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Dr. M's Classes Rock€¦ · Web viewParasympathetic nerves Adrenergic receptor function Beta-adrenergic receptors Norepinephrine or epinephrine Cardiac Performance Cardiac output
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Cardiovascular Structure and FunctionPathology 2 - Dr. Gary Mumaugh
Circulatory System - Heart Right heart
o Pulmonary circulation - Pumps blood through the lungs Left heart
o Systemic circulation - Pumps blood through the body Mediastinum Heart wall
o Pericardium Parietal and visceral Pericardial cavity and
Structure of Blood Vessels Lumen Tunica intima Tunica media Tunica externa (adventitia)
Factors Affecting Blood Flow Pressure
o Force exerted on a liquid per unit area Resistance
o Opposition to forceo Diameter and length of the blood vessels contribute to resistance
Poiseuille law Factors Affecting Blood Flow
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Neural control of total peripheral resistanceo Change in diameter of the vesselso Baroreceptorso Arterial chemoreceptors
Velocity Laminar vs. turbulent flow Vascular compliance
Laminar vs. Turbulent Flow
Regulation of Blood Pressure Arterial pressure
o Mean arterial pressure (MAP)o Effects of cardiac outputo Effects of total peripheral resistanceo Effect of hyperemiao Effects of hormones
Epinephrine and norepinephrine Antidiuretic hormone, renin-angiotensin system, and natriuretic
peptides
Regulation of Blood Pressure Adrenomedullin Insulin Venous pressure
Regulation of Coronary Circulation Coronary perfusion pressure Autoregulation
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Autonomic regulation
Lymphatic System Special vascular system that picks up excess fluid and returns it to the bloodstream Lymphatic fluid Lymphatic veins and venules Right lymphatic duct Thoracic duct Afferent and efferent lymphatic vessels