Chapter 5 Cardio Flashcards
Heart
Hollow muscular organ located in the thoracic cavity
Apex
Lower tip of the heart
Pericardium/pericardial sac
Double walled membrane is sacs that encloses the heart
Parietal pericardium
Fibrous sac that surrounds and protects the heart
Pericardial fluid
Acts as a lubricant To prevent friction as the heartbeats
Visceral pericardium
Inner layer of the pericardium that also forms the outer layer of the heart
Epicardium
External layer of the heart and inner layer of the pericardium
Myocardium
At all and thickest of the hearts three layers consist of specialized cardiac muscle tissue that is capable of constant contraction and relaxation of pumping movement necessary to maintain the flow of blood
Endocardium
The inner lining of the heart surface that comes in direct contact with the blood
Coronary arteries
Supply oxygen rich blood to the myocardium
Atria
Upper two chambers of the heart receiving chambers and all blood enters the heart through these chambers
Ventricles
Two lower chambers of the heart
Tricuspid valve
Shows the opening between the right atrium and the right ventricle
Pulmonary semilunar valve
Located between the right ventricle and pulmonary artery
Mitro valve
Located between the left atrium and left ventricle
Aortic semilunar valve
Located between the left ventricle and the aorta
Pulmonary circulation
Flow of blood only between the heart and lungs
Pulmonary arteries
Carry deoxygenated blood out of the right ventricle into the lungs
Pulmonary veins
Carry oxygenated blood from the lungs into the left left atrium of the heart
Systemic circulation
Includes the flow of blood to all parts of the body except the long test blood flows out of the left ventricle into the arterial circulation veins carry deoxygenated blood into the right atrium
Conduction system
Electrical impulses are controlled by the Sinoartial node atrioventricle node and bundle of his
Sino atrial node
Located in the posterior wall of the right atrium near the entrance of the superior vena cava
What is the natural pacemaker of the heart
Sinoatrial node
Atrioventricle node
Located on the floor of the right atrium near the inter at rail septum
Bundle of his
Group of fibers located with in the interventricular septum fibers Carry an electrical impulse to for the sequence of Heart contractions
Purkinje fibers
Specialized conductor fiber is located within the walls of the ventricles relay the electrical impulses to the cells of the ventricle is the stimulation that causes the ventricles to contract
P-wave
Due to stimulation of the atria
QRS complex
Shows the stimulation of the ventricles
T Wave
Recovery of the ventricles
Arteries
Large blood vessels that carry blood away from the heart to all regions of the body
Aorta
Artist but I sought in the body begins from the left ventricle of the heart and forms and main trunk of the Arterial system
Carotid arteries
Major arteries that carry blood upward to the head
Internal carotid artery
Brings oxygen rich blood to the brain
External carotid artery
Brings blood to the face
Arterioles
Waller there are branches of arteries that deliver blood to capillaries
Capillaries
Smallest blood vessels in the body form networks that expanded vascular beds that have been important role of delivering oxygen and nutrients to cells of the tissue
Veins
Low pressure collecting system to return oxygen poor blood to the heart
Venules
The smallest veins that join to form the larger veins
Superficial veins
Located near the body surface
Deep veins
Located within the tissues and away from your body surface
Veenee cavae
Two largest beans in the body these are the veins that return blood into the heart
Superior vena cava
Transports blood from the upper portion of the body to the heart
Inferior vena cava
Transports blood from the lower portion of the body to the heart
Pulse
Rhythmic pressure against the wall of an artery caused by the contraction of the heart
Blood pressure
Measurement of the amount of systolic and diastolic pressure exerted against the walls of the arteries
Systolic pressures
Occurs when the ventricles contract is the highest pressure against the walls of an artery
Diastolic pressure
Occurs when the ventricles are relaxed is the lowest pressure against the walls of an artery
Contents of blood
55% plasma and 45% of formed elements
Plasma
Straw-colored fluid that contains nutrients hormones and waste products is 91% water
Serum
As my fluid after the blood cells and clotting proteins have been removed
Fibrinogen and prothrombin
Clotting proteins found in plasma
Hemoglobin
Oxygen carrying blood proteins pigment of the earth erythrocytes
Neutrophils
Found in red bone marrow are the most common type of Blood cells
Basophils
Warm and red bone marrow least common type of WBC responsible for causing the symptoms of allergies
Eosinophils
Destroy parasitic organisms and play a major role in allergic reactions
Lymphocytes
Sing in red bone marrow when fluid in spleen identify foreign substances and germs in the body and produce antibodies
Monocytes
Phone and red bone marrow Lymph nodes and spleen provide immunological defenses against many infectious organisms
Thrombocytes/platelets
Smallest formed elements of the blood important role in clotting of blood
Blood gases
Gases that are normally dissolved in the liquid portion of blood such as oxygen carbon dioxide and nitrogen
Cardiologist
Specializes in diagnosing and treating Melodies diseases and disorders of the heart
Hematologist
Mission he specializes in diagnosing and treating Abnormalities diseases and disorders of the blood and blood forming tissues
Vascular surgeon
Physician who specializes in the diagnosis medical management and surgical treatment of disorders of the blood vessels
Coronary artery disease/coronary heart disease/ischemic heart disease
Artherosclerosis The coronary arteries that reduces the blood supply to the heart muscles can cause a heart attack
Artherosclerosis
Running and narrowing of the arteries caused by a buildup of cholesterol plaque on the interior walls of the arteries
Black
How do you deposit similar to the build up of rust inside a pipe
Lumen
Opening within these vessel through which the blood flows
Artheroma
Deposit a plaque on Or within the arterial wall
Ischemia
Condition in which there is an in sufficient supply of oxygen in the tissues due to restricted bloodflow to a part of the body
Angina/angina Pectoris
Condition in which severe episodes of chest pain occur due to an inadequate blood flow to the myocardium
Stable angina
Occurs during exertion and resolves with rest
Unstable angina
Occur either during exertion or rest and as a precursor to mycardial infarction
Myocardial infarction/Heart attack
The occlusion of one or more coronary arteries caused by plaque buildup
Heart failure/congestive heart failure
Chronic condition where the heart is unable to pump out all of the blood that it receives
Left sided heart failure/pulmonary edema
Occurs when the left side of the heart is unable to efficiently pump oxygen rich blood from the lungs to the rest of the body
Right sided heart failure
Of her because the right side of the heart is unable to efficiently pump blood throughout the rest of the body often the result of left-sided heart failure first noticeable in the feet and leg
Cardiomegaly
Abnormal enlargement of the heart that is frequently associated with heart failure as a heart in larges in an effort to compensate or decreased pumping ability
Carditis
Inflammation of the heart