Shared Flashcard Set

Details

Medical Terminology
Ch 5
79
Medical
Undergraduate 2
11/06/2013

Additional Medical Flashcards

 


 

Cards

Term
Cardiovascular
Definition
pertaining to the heart and blood vessels
Term
Cardiovascular System
Definition
Consists of the heart, blood vessels, and blood
Term
Heart
Definition
A hollow, muscular organ located in the thoracic cavity between th lungs
Term
Apex
Definition
The lower tip of the heart
Term
Pericardium
Definition
The double-walled membranous sac that encloses the heart
Term
Paritietal Pericardium
Definition
Fibrous sac that surrounds and protects the heart
Term
Epicardium
Definition
External layer of the heart and the inner layer of the pericardium
Term
Myocardium
Definition
Middle and thickest of the heart's three layers
Term
Endocardium
Definition
The inner lining of the heart. This is the surface that comes into direct contact with the blood as it is being pumped through the heart.
Term
Coronary Arteries
Definition
Supply oxygen-rich blood to the myocardium
Term
Atria
Definition
The two upper chambers of the heart, and these chambers are divided by interatrial septum
Term
Ventricles
Definition
Two lower chambers of the heart, these chambers are divided by the interventicular septum
Term
Tricuspid Valve
Definition
Controls the opening between the right atrium and the right ventricle
Term
Pulmonary semilunar valve
Definition
located between the right ventricle and the pulmonary artery.
Term
Mitral valve
Definition
located between the left atrium and left ventricle.
Term
Aortic semilunar Valve
Definition
Located between the left ventricle and the aorta
Term
Right Atrium
Definition
Receives oxygen poor blood from all tissues except the lungs, through the superior and inferior venae cavae. Blood flows out of this through the tricuspid valve into the right ventricle
Term
Right Ventricle
Definition
Pumps the oxygen-poor blood through the pulmonary semilunar valve and into the pulmonary artery, which carries it to the lungs
Term
Left Atrium
Definition
Receives oxygen-rich blood from the lungs through the four pulmonary veins. The blood flows out of this, through the mitral valve, and into the left ventricle.
Term
Left Ventricle
Definition
Receives oxygen-rich blood from the left atrium. Blood flows out of this through the aortic semilunar valve and into the aorta, which carries it to all parts of the body, except the lungs.
Term
Pulmonary Circulation
Definition
the flow of blood only between the heart and lungs
Term
Pulmonary arteries
Definition
carry deoxygenated blood out of the right ventricle and into the lungs. This is the only place in the body where dexoygenated blood is carried by arteries instead of veins
Term
Pulmonary veins
Definition
Carry the oxygenated blood from the lungs into the left atrium of the heart. This is the only place in the body where veins carry oxygenated blood
Term
Systemic circulation
Definition
Includes the flow of blood to all parts of the body except the lungs
Term
Heartbeat
Definition
The ability to pump blood effectively throughout the body
Term

Sinoatrial node

SA Node

Definition
located in the posterior wall of the right atrium near the entrance of the superior vena cava. Establishes the basic rhythm and rate of the heartbeat. Known as the natural pacemaker of the heart. Electrical impulses start each wave of muscle contraction in the heart from here.
Term
Atrioventricular node
Definition
Located on the floor of the right atrium near the interatrial septum. From here it transmits the electrical impulses onward to the bundle of His.
Term
Bundle of His
Definition
A group of fibers located within the interventricular septum which carry an electrical impulse to ensure the sequence of the heart contractions. These electrical impulses travel onward to the right and left ventricles and the purkinjie fibers.
Term
Purkinje Fibers
Definition
Specialized conductive fibers located within the walls of the ventricles. These fibers relay the electrical impulses to the cells of the ventricles and it is this stimulation that causes the ventricle to contract. This contraction of the ventricles forces blood out of the heart and into the aorta and pulmonary arteries.
Term
P wave
Definition
Contraction of the atria
Term
QRS complex
Definition
Contraction of the ventricles
Term
T wave
Definition
recovery (relaxation) of the ventricles.
Term
Arteries
Definition
large blood vessels that carry blood away from the heart to all regions of the body
Term
Aorta
Definition
The largest blood vessel in the body. It begins from the left ventricle of the heart and forms themain trunk of the arterial system
Term
Carotid arteries
Definition
The major arteries that carry blood upward to the head
Term
Common carotid artery
Definition
located on each side of the neck
Term
internal carotid artery
Definition
brings oxygen rich blood to the brain
Term
external carotid artery
Definition
brings blood to the face
Term
arterioles
Definition
the smaller, thinner branches of arteries that deliver blood to the capillaries
Term
Capillaries
Definition
one epithelial cell in thickness are the smallest blood vessels in the body. Have important roles of delivering oxygen and nutrients to the cells of tissues.
Term
Veins
Definition
Form a low-pressure collecting system to return oxygen-poor blood to teh heart
Term
Venules
Definition
the smallest veins that join to form the larger veins
Term
Venae Cavae
Definition
Two largest veins in the body. These are the veins that return blood into the heart
Term
Superior vena cava
Definition
transports blood from the upper portion of the body to the heart
Term
Inferior vena cava
Definition
Transports blood from the lower portion of the body to the heart
Term
Pulse
Definition
Rhythmic pressure against the walls of an artery caused by the contraction of the heart
Term
Blood Pressure
Definition
The measurement of the amount of systolic and diastolic pressure exerted against the walls of the arteries.
Term
Systolic Pressure
Definition
Occurs when the ventricles contract, is the highest pressure against the walls of an artery
Term
Diastolic Pressure
Definition
Occurs when the ventricles are relaxed, is the lowest pressure against the walls of an artery
Term
Plasma
Definition
A straw colored fluid that contains nutrients, hormones, and waste products. 91% water, 9% proteins
Term
Serum
Definition
Plasma fluid after the blood cells and the clotting proteins have been removed
Term
Fibrinogen and Prothrombin
Definition
Clotting proteins found in plasma
Term
Erythrocytes
Definition
Red Blood Cells produced by the red bone marrow. Transports oxygen to the tissues.
Term
Hemoglobin
Definition
Oxygen-carrying blood protein pigment of the erythrocytes
Term
Leukocytes
Definition
White blood cells involved in defending the body agianst infective organisms and foreign substances.
Term
Neutrophils
Definition
Formed in red bone marrow, most common type of WBC. Play a major role in the immune system's defense against pathogens, including bacteria viruses and fungi.
Term
Basophils
Definition
Formed in red bone marrow, Least common type of WBC. Responsible for causing the symptoms of allergies
Term
Eosinophils
Definition
Formed in red bone marrow and then migrate to tissues throughout the body. Destroy parasitic organisms and play a major role in allergic reactions.
Term
Lymphocytes
Definition
Fomred in red bone marrow, in lymph nodes and in the spleen. Identify foreign substances and germs in the body and produce antibodies that specifically target them.
Term
Monocytes
Definition
Formed in red bone marrow lymph nodes and the spleen. Provide immunological defenses against many infectious organisms.
Term
Thrombocytes
Definition
Smallest fromed elements of the blood. Play an important role in the clotting of blood.
Term
Blood Types
Definition
Classified according to the presence or absence of certain antigens
Term
Type A Blood
Definition
Presence of type A antigen
Term
Type B Blood
Definition
B antigen is present
Term
Type AB Blood
Definition
A and B antigens are present
Term
O Blood
Definition
A and B antigens are absent
Term
Rh Factor
Definition
the presence or absence of the Rh antigen on red blood cells
Term
Blood gases
Definition
gases that are normally dissolved in the liquid portion of blood. ex; O2 CO2 and N2
Term
Cardiologist
Definition
Physician who specializes in diagnosing and treating abnormalities diseases and disorders of the heart
Term
Hematologist
Definition
Physician who specializes in diagnosing and treating abnormalities diseses and disorders of the blood and blood froming tissues
Term
Congenital Heart defects
Definition
Structural abnormalities caused by the failure of the heart to develop normally befor birth
Term
Coronary Artery disease
Definition
atherosclerosis of the coronary arteries that reduces the blood supply to the heart muscle
Term
Plaque
Definition
Fatty deposit that is similar to the buildup of rust insid a pipe
Term
atheroma
Definition
deposit of plaque on or within the arterial wall
Term
Ischemic heart disease
Definition
group of cardiac disabilities resulting from an insufficient supply of oxygenated blood to the heart
Term
Ischemia
Definition
condition in which there is an insufficient supply of oxygen in the tissues due to a restricted blood flow to a part of the body.
Term
Angina
Definition
condition in which severe episodes of chest pain occur due to an inadequate blood flow to the myocardium
Supporting users have an ad free experience!