Assessment of the Heart, Neck, and Peripheral Vascular System Flashcards
The focus on the Heart
Structure and Function
The hollow, muscular, four-chambered organ located in the middle of the thoracic cavity
Heart
Characteristics of the Heart
About the size of a clenched fist
Weighs approximately 255g in women and 310g in men
Extends vertically from the second to the left fifth intercostal space and horizontally from the right edge of the sternum to the left midclavicular line
An inverted cone
Fundamental organ of the Cardiovascular System
Space of the Heart
Mediastinum
Upper portion, near the left second intercostal space
Base
Lower portion, near the left fifth intercostal space
Apex
Anterior chest area overlying the Heart
Precordium
Pumps blood to the Lungs
Right Side of the Heart
Removes CO2 between the alveoli and blood of the Lungs
Pulmonary Circulation
Pumps blood to all other parts of the body
Left Side of the Heart
Renders blood between everything
Systemic Circulation
Flow of blood to tissues and organs promoting the diffusion of oxygen and carbon dioxide
Perfusion
Carries deoxygenated blood away from the Heart
Great Vessels
Returns deoxygenated blood to the Right Atrium
Superior and Inferior Vena Cava
Carries oxygenated blood to the Lungs
Pulmonary Artery
Returns oxygenated blood to the Lungs
Pulmonary Veins
Transports oxygenated blood from the Left Ventricle to the rest of the body
Aorta
Four Chambers of the Heart
Right Atrium
Right Ventricle
Left Atrium
Left Ventricle
Partition between the right and left side of the Heart
Septum
Two Septums of the Heart
Interatrial Septum
Interventricular Septum
Receives blood
Thin-Walled Atrium
Pumps blood
Thick-Walled Ventricles
Entrance to the Ventricles
Atrioventricular Valves
Two Atrioventricular Valves
Tricuspid Valve
Bicuspid Valve / Mitral Valve
Three flaps of the Heart
Tricuspid Valve
Two flaps of the Heart
Bicuspid Valve / Mitral Valve
Exit of each Ventricles
Semilunar Valves
Two Semilunar Valves
Pulmonic Valve
Aortic Valve
Blood exits the Right Ventricle
Pulmonic Valve
Blood exits the Left Ventricle
Aortic Valve
Fingerlike projections
Papillary Muscles
Stringlike projections
Chordae Tendinea
Tough, inextensible, loose-fitting, fibrose-rough sac that attaches to the great vessels
Pericardium
Serous membrane secreting a small amount of pericardial fluid
Parietal Pericardium
Outer surface of the Heart
Visceral Pericardium / Epicardium
Thickest layer of the Heart
Myocardium
Inner surface of the Heart
Endocardium
Generates an electrical impulse and conduct it through the Heart
Cardiac Muscle Cells
Generation and conduction of electric impulses
Cardiac Cycle
Generates electrical impulses at Atrium
Sinoatrial Node / SA Node
Slows impulses
Atrioventricular Node / AV Node
Continues impulses
Purkinje Fibers
Generates electrical impulses at Ventricles
Bundle of His
Electric impulses throughout the cardiac conduction circuit
Electrocardiography
Phases of Electrocardiography
P
Q
R
S
T
Relaxation of the Ventricles / ‘Filling’
Diastole